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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 6,880	$ 12,072
Other comprehensive income/(loss)
Unrealized losses on available-for-sale securities, net of tax	(103)
Foreign currency translation adjustment	245	373
Other comprehensive income	142	373
Comprehensive income	$ 7,022	$ 12,445

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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