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Stock-Based Compensation (Details 4) (Restricted Stock, USD $)
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3 Months Ended | 6 Months Ended | |
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Jun. 30, 2013
Item
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Mar. 31, 2013
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Jun. 30, 2013
Item
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Restricted Stock
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| Stock-Based compensation | |||
| Award vesting rights proportion | One-Third | ||
| Number of vesting rights anniversaries | 3 | 3 | |
| Number of Shares | |||
| Balance at the beginning of the period (in shares) | 857,041 | 758,990 | 758,990 |
| Granted (in shares) | 105,858 | 172,212 | |
| Vested (in shares) | (70,964) | ||
| Forfeited (in shares) | (152,653) | (3,197) | |
| Balance at the end of the period (in shares) | 810,246 | 857,041 | 810,246 |
| Weighted-Average Grant Date Fair Value per Share | |||
| Balance at the beginning of the period (in dollars per share) | $ 13.07 | $ 12.49 | $ 12.49 |
| Granted (in dollars per share) | $ 18.29 | $ 15.34 | |
| Forfeited (in dollars per share) | $ 12.54 | $ 13.78 | |
| Balance at the end of the period (in dollars per share) | $ 14.51 | $ 13.07 | $ 14.51 |
| X | ||||||||||
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- Definition
Share-based compensation arrangement by share based payment award award vesting rights number of anniversary. No definition available.
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- Definition
Share based compensation arrangement by share based payment awards equity instruments other than options forfeited in period weighted average grant date fair value. No definition available.
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- Definition
Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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