Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of Comprehensive Income (Loss) (Unaudited) [Abstract]
Net income	$ 942	$ 942
Other comprehensive income (loss), net of tax
Net unrealized gain (loss) on available-for-sale securities	(1,751)	428
Reclassification for (gain) loss included in net income	(63)	0
Other comprehensive income (loss), net of tax	(1,814)	428
Comprehensive income (loss)	$ (872)	$ 1,370