Debt - (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Nov. 02, 2012
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Maximum available borrowing capacity			$ 30,000
Unused fee	0.10%
Percentage of stock pledged of foreign subsidiary	66.00%
Revolving credit facility, balance outstanding	0	0
Revolving credit facility initiation date	Nov. 02, 2012
Revolving credit facility maturity date	Nov. 02, 2015
Securities Secured Revolving Credit Facility
Line Of Credit Facility [Line Items]
Maximum available borrowing capacity			20,000
Interest rate	BBA LIBOR Daily Floating Rate plus 0.75%
Debt instrument, basis spread on variable rate	0.75%
Receivables Secured Revolving Credit Facility
Line Of Credit Facility [Line Items]
Maximum available borrowing capacity			$ 10,000
Interest rate	BBA LIBOR Daily Floating Rate plus 1.50%,
Debt instrument, basis spread on variable rate	1.50%