Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets
Net operating loss carry forwards	$ 48,003	$ 44,754
Credit carry forwards	3,708	3,708
Fixed Assets	1,181	1,466
Intangibles	19,588	23,029
Equity based compensation	311	279
Nondeductible accruals	1,977	2,382
Various reserves	142	149
Other	56	51
Valuation Allowance	(74,907)	(75,744)
Total deferred income taxes - net	59	74
Deferred income tax liabilities
Prepaid expenses	(59)	(74)
Total deferred income liabilities	(59)	(74)
Net deferred income tax assets (liabilities)	$ 0	$ 0