Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits at beginning of year	$ 140	$ 155	$ 203
Increases in tax positions in the current year
Settlements	(32)	(15)	(48)
Gross unrecognized tax benefits at end of year	$ 108	$ 140	$ 155