Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets:
Accrued expenses	$ 2,994	$ 2,976
Allowance accounts	4,861	6,739
Net operating loss carryforward	98,896	95,640
Capital loss carryforward	1,114	2,434
Equity method investment	58,820	58,820
Original issue discount	17,924	0
Basis in identified intangibles	15,286	5,978
Tax credit carryforwards	7,051	7,051
Contingency accrual	0	7,700
Other	10,755	12,138
Total non-current deferred income tax asset	217,701	199,476
Valuation allowance	(217,589)	(194,255)
Net non-current deferred income tax asset	112	5,221
Deferred income tax liabilities:
Other	(1,240)	0
Unbilled receivables	(1,908)	(6,516)
Basis in property, plant and equipment	(531)	(3,439)
Total net non-current deferred income tax liability	$ (3,567)	$ (4,734)