Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 157,636	$ 115,048	$ 189,390
Other comprehensive income (loss), net of tax:
Fair value adjustments to available-for-sale securities, net of tax	535	(1,195)	433
Comprehensive income	$ 158,171	$ 113,853	$ 189,823