Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended					3 Months Ended			3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Jetalon [Member]	Apr. 01, 2013 Jetalon [Member]	Jun. 30, 2012 EPT [Member]	Apr. 02, 2012 EPT [Member]	Dec. 31, 2011 EPT [Member]	Jul. 02, 2011 Pureline [Member]	Apr. 04, 2011 Pureline [Member]
Business Acquisition [Line Items]
Goodwill					$ 10,090,000		$ 2,200,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				10 years
Payments to Acquire Business				13,400,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					14,500,000
Additional equity interest acquired							50.00%			30.00%
Percentage of equity method investment								50.00%
Business Combination, Consideration Transferred						3,400,000
Fair value of equity interest in Pureline held by Company before acquisition date						2,900,000
Gain recognized in earnings						1,300,000
Foreign currency transaction gain realized upon acquisition.						200,000
Reclassification of cumulative translation adjustment associated with acquisition of business	0	(216,000)	0
Purchase of noncontrolling interest									1,500,000
Contingent consideration obligation	1,282,000	0			3,094,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset				$ 1,800,000