Fair Value Measurements - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 04, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gain on the sale of an equity method investment			$ 1,500,000
Loss related to the disposition of the equity interest			200,000
Gain on cumulative translation reclassification adjustment associated with the equity method investee	(787,000)	0	1,715,000
Carrying value of investment				4,100,000
Sale of stock, fair value of consideration received				3,900,000
Cash, fair value received			1,800,000
Equipment, fair value received				400,000
Intangibles, fair value received				$ 1,700,000