Stockholders' Equity - Common Stock (Details) - $ / shares						12 Months Ended
	Oct. 28, 2016	Oct. 13, 2016	Feb. 19, 2015	Feb. 10, 2014	May 05, 1998	Dec. 31, 2016
Class of Stock
Minimum closing sales price of common stock to issue termination notice to put holders						$ 32.00
Shares held by put holders						35,780
Put Rights outstanding						0
Remaining shares of common stock subject to the liquidation put						763,954
Common stock, shares reserved for future issuance						76,137,792
Common Stock
Class of Stock
Stock issued (in shares)	1,225,243	25,000,000	23,000,000	7,867,438	1,199,684
Sale price of common shares subject to the liquidation put						$ 16.00
Price exceeds on number of days						20 days
Liquidation put shares no longer held by original holders						399,950