Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income (loss)	$ (189,000)	$ (20,281,000)
Less: Net loss from discontinued operations, net of tax	(469,000)	(104,000)
Net income (loss) from continuing operations	280,000	(20,177,000)
Adjustments to reconcile net income (loss) from continuing operations to net cash used in operating activities:
Depreciation and amortization expense	1,351,000	953,000
Non-cash rent expense	178,000
Accretion and amortization of loan fees and non-cash interest income	(147,000)	421,000
Share-based compensation expense	2,674,000	3,550,000
Loss on disposal of property and equipment	20,000	84,000
Deferred income taxes	(250,000)	1,117,000
Changes in operating assets and liabilities:
Accounts receivable, net	(6,686,000)	(1,291,000)
Inventory, net	(2,346,000)	773,000
Prepaid expenses and other assets	(1,974,000)	(270,000)
Accounts payable	325,000	(8,982,000)
Accrued liabilities	(820,000)	2,978,000
Deferred income	49,000
Other liabilities, net		(70,000)
Net cash used in operating activities from continuing operations	(7,346,000)	(20,914,000)
Cash flows from investing activities
Purchases of property and equipment	(729,000)	(4,884,000)
Net cash used in investing activities from continuing operations	(729,000)	(4,884,000)
Cash flows from financing activities
Proceeds from exercise of share options	3,926,000	2,697,000
Payments of tax withheld on exercises of options and vesting of restricted share units	(224,000)	(265,000)
Repurchases of ordinary shares	(3,325,000)
Payments on capital lease		(57,000)
Net cash provided by financing activities from continuing operations	377,000	2,375,000
Net cash flows of continuing operations	(7,698,000)	(23,423,000)
Cash flows from discontinued operations
Net operating cash flows provided by discontinued operations		6,778,000
Net investing cash flows used in discontinued operations		(2,527,000)
Net financing cash flows used in discontinued operations		(10,000)
Net cash flows of discontinued operations		4,241,000
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(864,000)	(994,000)
Net decrease in cash, cash equivalents, and restricted cash	(8,562,000)	(20,176,000)
Cash, cash equivalents, and restricted cash at beginning of period	192,944,000	90,532,000
Cash, cash equivalents, and restricted cash at end of period	$ 184,382,000	$ 70,356,000