Income Taxes - Components of the Net Deferred Tax Assets (Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Assets, Current	$ 1,238	$ 1,119
Liabilities, Current	(4)	(3)
Valuation allowance, Current	(59)	(1,110)
Net deferred tax asset (liability), Current	1,175	6
Assets, Long-term	30,625	36,610
Liabilities, Long-term	(87)	(86)
Valuation allowance, Long-term	(1,441)	(36,616)
Net deferred tax asset (liability), Long-term	$ 29,097	$ (92)