CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 3,294	$ 34,692	$ 50,139	$ 98,735
Other comprehensive income
Unrealized holding (loss) gain, net of tax	(4,006)	996	151	2,162
Comprehensive (loss) income	$ (712)	$ 35,688	$ 50,290	$ 100,897