CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (353)	$ 1,067	$ 606	$ 1,634
Other comprehensive loss, before tax:
Foreign currency translation adjustments	(269)	(50)	(199)	(252)
Unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses)	1	3	129	(33)
Reclassification adjustment for gains included in net income	0	(3)	0	(3)
Total unrealized gains (losses) on available-for-sale securities	1	0	129	(36)
Unrealized gains on foreign exchange forward contracts:
Other comprehensive loss before income taxes	(268)	(50)	(70)	(288)
Income tax (provision) benefit	0	0	(26)	8
Other comprehensive loss after income taxes	(268)	(50)	(96)	(280)
Total comprehensive income (loss)	$ (621)	$ 1,017	$ 510	$ 1,354

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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