Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Statements Of Comprehensive Income
Net Income	$ 6,945	$ 7,602
Other Comprehensive loss: Unrealized income (loss) on investments, net of tax benefit of $37 in 2016 and net of tax expense of $62 in 2015	(68)	114
Comprehensive Income	$ 6,877	$ 7,716