Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 4,509	$ 2,236	$ 13,581	$ 7,356
Other comprehensive income-
Cumulative translation adjustment	1,703	(4,653)	(277)	1,000
Comprehensive income	$ 6,212	$ (2,417)	$ 13,304	$ 8,356

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

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Number 210

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

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Reference 14: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

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Reference 15: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Research Bulletin (ARB)

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+ Details

- Definition

Amount after tax and reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency, which is attributable to the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Publisher AICPA

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 810

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+ Details

- Definition

Net of tax amount of other comprehensive income (loss) attributable to the parent entity.

+ References

+ Details