Summary of Significant Accounting Policies (Tables)
|12 Months Ended|
Dec. 31, 2016
|Summary of Significant Accounting Policies|
|Schedule of costs of revenues by revenue category||
|Schedule of changes to the allowance for doubtful accounts||
Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.
Reference 1: http://www.xbrl.org/2003/role/presentationRef