Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 8,824	$ 9,424
Other comprehensive income
Change in unrealized gains on available-for-sale debt securities, net of tax	0	460
Foreign currency translation adjustment	291	412
Other comprehensive income	291	872
Comprehensive income	$ 9,115	$ 10,296

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

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