Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) customer	Dec. 31, 2014 USD ($) customer	Dec. 31, 2013 USD ($)
Concentration Risk [Line Items]
Impairment of marketable securities	$ (29,200)	$ (7,900)	$ (22,700)		$ (59,781)	$ 0	$ 0
Allowance for doubtful accounts	38			$ 0	38	0
Intangibles impairment					7,400
Impairment of goodwill and intangible assets	$ 25,600			$ 36,700	18,300	36,700
Advertising expense					$ 200	$ 200	$ 100
Credit Concentration Risk | Sales Revenue
Concentration Risk [Line Items]
Number of customers | customer					5	5
Concentration risk (as a percent)					55.70%	61.20%
Credit Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (as a percent)					51.80%	65.50%
Again Faster
Concentration Risk [Line Items]
Equity method investment - impairment					$ 2,500
Machinery and Equipment
Concentration Risk [Line Items]
Useful life					4 years
Building
Concentration Risk [Line Items]
Useful life					39 years