CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Components of net revenue:
Revenue	[1]	$ 15,724	$ 21,605	$ 35,374	$ 41,296
Components of cost of revenue:
Cost of revenue	[2]	4,625	6,287	9,761	12,856
License and product revenue
Components of net revenue:
Revenue		4,529	9,651	11,943	16,804
Components of cost of revenue:
Cost of revenue		1,465	2,611	3,220	4,520
Service revenue
Components of net revenue:
Revenue		11,195	11,954	23,431	24,492
Components of cost of revenue:
Cost of revenue		$ 3,160	$ 3,676	$ 6,541	$ 8,336

[1] Quarters ended June 30,Components of Revenue2018 2017License Fees4,529 9,651Service Revenue11,195 11,954Net Revenue15,724 21,605 Six Months Ended June 30,Components of Revenue2018 2017License Fees$11,943 $16,804Service Revenue23,431 24,492Net Revenue$35,374 $41,296

[2] Quarters ended June 30,Components of Cost of Revenue2018 2017License Fees1,465 2,611Service Revenue3,160 3,676Net Revenue Costs4,625 6,287 Six Months Ended June 30,Components of Cost of Revenue2018 2017License Fees$3,220 $4,520Service Revenue6,541 8,336Net Revenue Costs$9,761 $12,856