Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,063)	$ (1,147)
Other comprehensive income:
Unrealized gain (loss) on investments, net of taxes	1
Unrealized gain (loss) on currency translation		1
Other comprehensive income (loss)	1	1
Comprehensive income (loss)	$ (1,062)	$ (1,146)