Supplemental Disclosure to Cash Flows - Summary of Supplemental Non-Cash and Other Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Cash paid for income taxes-net	$ 3,625	$ 1,079	$ 52
Non Cash Transactions
Stock issued for business acquisition	1,578
Property and equipment purchases in accounts payable	279	113	81
Purchase of assets under capital lease obligations		$ 147