Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Condensed Consolidated Statements Of Comprehensive Income
Net income (loss)	$ (195)	$ (3,626)
Unrealized gain on available-for-sale securities, net of tax	0	2,257
Total comprehensive (loss) income	$ (195)	$ (1,369)