Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 People	Dec. 31, 2012	Dec. 31, 2011	Sep. 26, 2011
Leases [Abstract]
Expiration of non-cancellable operating leases	through 2022
Accrued lease commitments expense	$ 6.4
Estimated sublease income	4.8
Rent expense under operating leases	2.4	2.7	2.8
Incentives per square feet	40.00
Incentives for improvements to space	2.2
Amount received to start-up new facility				$ 1.0
Minimum number of people to be employed	232
Time period to meet employment commitment	3 years