Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current
Various reserves	$ 162	$ 199
Nondeductible accruals	1,879	1,352
Prepaid expenses	(101)	(95)
Other	22	43
Valuation allowance	(1,810)	(1,410)
Total Current	152	89
Non- current
Credit carryforwards	3,708	3,708
Net operating loss carryforwards	38,204	23,808
Nondeductible accruals	606
Fixed assets	1,498	1,299
Amortization	28,537	31,483
Identifiable intangibles acquired	(2,250)	(2,239)
Equity based compensation	301	934
Other	14	24
Valuation allowance	(70,772)	(59,108)
Total Non-current	$ 154	$ 91