Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net income	$ 9,728	$ 119,586	$ 11,455	$ 120,615
Unrealized gain on investments available for sale, net of income tax effect of $129, $0, $708 and $0	351	0	1,911	0
Comprehensive income	10,079	119,586	13,366	120,615
Less: comprehensive income attributable to noncontrolling interest	(97)	(396)	(268)	(927)
Comprehensive income attributable to the Company	$ 10,176	$ 119,982	$ 13,634	$ 121,542