Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Consolidated Statements Of Comprehensive Income
Net Income	$ 10,026	$ 7,450	$ 19,976	$ 14,396
Other Comprehensive Income (Loss): Unrealized income (loss) on investments, net of tax expense (benefit) of $204, ($136), $36 and ($172)	379	(252)	66	(321)
Comprehensive Income	$ 10,405	$ 7,198	$ 20,042	$ 14,075