Borrowings - Components of Borrowings (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Line of Credit Facility [Line Items]
Total long-term debt	$ 98,000	$ 91,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility	98,000	91,000
Less: Current portion
Total long-term debt	$ 98,000	$ 91,000