Future Minimum Lease Payments under Operating and Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Operating Leases
2014	$ 4,716
2015	4,136
2016	3,371
2017	3,301
2018	3,263
Thereafter	8,311
Total minimum lease payments	27,098
Capital Leases
2014	838	[1]
2015		[1]
2016		[1]
2017		[1]
2018		[1]
Thereafter		[1]
Total minimum lease payments	$ 838	[1]

[1] Capital lease payments include interest payments of less than $0.1 million.