CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 3,482,000	$ (7,601,000)	$ (16,557,000)
Other comprehensive (loss) income:
Foreign currency translation adjustments	(33,000)	(918,000)	823,000
Total comprehensive income (loss)	$ 3,449,000	$ (8,519,000)	$ (15,734,000)