Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other comprehensive loss:
Net loss		$ (10,878)	$ (22,996)	$ (8,558)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	[1]	0	(472)	(405)
Other comprehensive loss		0	(472)	(405)
Total comprehensive loss		$ (10,878)	$ (23,468)	$ (8,963)

[1] In 2018, we adopted Accounting Standards Update No. 2016-01 (Subtopic 825-10) and recorded a cumulative-effect reclassification $0.5 million unrealized loss on equity securities from other accumulated comprehensive loss to the beginning accumulated deficit. See Note 2 “Summary of Significant Accounting Policies” in the Accompanying Notes to the Consolidated Financial Statements for more information.