Other Long-Term Liabilities - Summary of Other Long-Term Liabilities (Parenthetical) (Details)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Series B Convertible Preferred Stock [Member]
Other Long Term Liabilities [Line Items]
Convertible preferred stock interest rate	7.00%	7.00%	7.00%

The percentage rate used to calculate dividend payments on preferred stock.

No definition available.

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration