Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net loss	$ 120,779,000	$ (32,885,000)	$ (22,349,000)
Less: Net income (loss) from discontinued operations, net of tax	(108,274,000)	(341,000)	771,000
Net income (loss) from continuing operations	(12,505,000)	33,226,000	21,578,000
Adjustments to reconcile net income (loss) from continuing operations to net cash used in operating activities:
Depreciation and amortization of intangible assets	1,662,000	1,618,000	932,000
Change in fair value of contingent purchase price consideration		(3,475,000)	(1,208,000)
Intangible assets impairment charges	879,000	18,300,000	1,765,000
Accretion and amortization of loan fees	2,408,000	569,000
Share-based compensation expense	4,507,000	5,671,000	4,901,000
Loss (income) on disposal of property and equipment	115,000	298,000
Deferred income taxes	(38,760,000)	1,602,000
Changes in operating assets and liabilities:
Accounts receivable, net	(3,390,000)	(988,000)	(1,642,000)
Inventory, net	(1,015,000)	(1,768,000)	(1,486,000)
Prepaid expenses and other assets	207,000	(454,000)	(3,063,000)
Accounts payable	(10,375,000)	(5,502,000)	(7,326,000)
Accrued liabilities	3,252,000	509,000	3,069,000
Other liabilities, net	(4,209,000)	3,733,000	(36,000)
Deferred income	95,000	(9,000)	(1,639,000)
Net cash used in operating activities from continuing operations	(32,119,000)	(13,122,000)	(27,311,000)
Cash flows from investing activities
Purchases of property and equipment	(5,350,000)	(1,295,000)	(856,000)
Cash paid for acquisitions, net of cash acquired			(27,515,000)
Net cash used in investing activities from continuing operations	(5,350,000)	(1,295,000)	(28,371,000)
Cash flows from financing activities
Proceeds from issuance of ordinary shares		39,298,000
Proceeds from exercise of share options	3,241,000	561,000	76,000
Payments of tax withheld on vesting of restricted share units	(383,000)	(212,000)
Payments on capital lease	(60,000)	(261,000)	(80,000)
Proceeds from term loan, net			29,457,000
Discount on the line of credit			(50,000)
Debt issuance costs			(289,000)
Loss on extinguishment of debt	(2,105,000)
Change in loans payable	(30,000,000)
Net cash (used in) provided by financing activities from continuing operations	(29,307,000)	39,386,000	29,114,000
Net cash flows of continuing operations	(66,776,000)	24,969,000	(26,568,000)
Cash flows from discontinued operations
Net operating cash flows provided by discontinued operations	14,729,000	9,548,000	5,401,000
Net investing cash flows provided by (used in) discontinued operations	156,218,000	(3,734,000)	(1,527,000)
Net financing cash flows used in discontinued operations	(48,000)	(12,000)	(11,000)
Net cash flows of discontinued operations	170,899,000	5,802,000	3,863,000
Effect of exchange rate changes on cash and cash equivalents, including restricted cash	(1,711,000)	451,000	(1,780,000)
Net increase (decrease) in cash and cash equivalents, including restricted cash	102,412,000	31,222,000	(24,485,000)
Cash, cash equivalents, and restricted cash at beginning of year	90,532,000	59,310,000	83,795,000
Cash, cash equivalents, and restricted cash at end of year	192,944,000	90,532,000	59,310,000
Supplemental disclosures
Cash paid for interest	2,656,000	3,123,000	450,000
Cash paid for taxes	$ 76,000	$ 145,000	$ 141,000