|
Condensed Consolidated Statement of Equity (USD $)
In Thousands, except Share data, unless otherwise specified |
Common Stock
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Treasury Stock
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Additional Paid-in Capital
|
Accumulated Deficit
|
Non-controlling Interest
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Total
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|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2014 |
$ 232us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
$ (13,242)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
$ 233,888us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
$ (19,443)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
$ 556us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
$ 201,991us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
| Balance (in shares) at Dec. 31, 2014 |
46,345,376us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
11,800,723us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
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| Increase (decrease) in shareholders' equity | ||||||
| Exercise of stock options |
2us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
3,708us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
3,710us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | |||
| Exercise of stock options (in shares) |
415,512us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Issuance of common stock - vesting of restricted stock |
2env_StockIssuedDuringPeriodValueRestrictedStockAwardVested / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
2env_StockIssuedDuringPeriodValueRestrictedStockAwardVested | ||||
| Issuance of common stock - vesting of restricted stock (in shares) |
358,166env_StockIssuedDuringPeriodSharesRestrictedStockAwardVested / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
|||||
| Stock-based compensation expense |
3,419us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
3,419us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | ||||
| Excess tax benefits from stock-based compensation expense |
11,468us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
11,468us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | ||||
| Purchase of treasury stock for stock-based minimum tax withholdings |
(6,441)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
(6,441)us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation | ||||
| Purchase of treasury stock for stock-based minimum tax withholdings (in shares) |
(117,180)us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
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| Net income |
2,511us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
2,511us-gaap_ProfitLoss | ||||
| Balance at Mar. 31, 2015 |
$ 236us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
$ (19,683)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
$ 252,483us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
$ (16,932)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
$ 556us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
$ 216,660us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
| Balance (in shares) at Mar. 31, 2015 |
47,119,054us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
11,917,903us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
| X | ||||||||||
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- Definition
Number of shares issued and vested during the period as a result of Restricted Stock Awards. No definition available.
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| X | ||||||||||
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- Definition
Aggregate value of stock related to Restricted Stock Awards issued and vested during the period. No definition available.
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| X | ||||||||||
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- Definition
The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. No definition available.
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| X | ||||||||||
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- Definition
This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
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| X | ||||||||||
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- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
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- Definition
For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. No definition available.
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| X | ||||||||||
|
- Definition
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Value of stock issued as a result of the exercise of stock options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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