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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,809	$ 7,162	$ 4,595	$ 9,073
Other comprehensive income-Cumulative translation adjustment	(8)	(4,066)	(2,267)	(1,980)
Comprehensive income	$ 1,801	$ 3,096	$ 2,328	$ 7,093

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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