Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Current portion of long-term debt	$ 7,500	$ 7,500
Long-term debt	64,000	42,500
Senior Credit Facilities
Debt Instrument [Line Items]
Total Senior Credit Facility	71,500	50,000
Senior Credit Facilities | Term Loan
Debt Instrument [Line Items]
Current portion of long-term debt	7,500	7,500
Long-term debt	35,000	42,500
Senior Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 29,000