Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (18,116)	$ (22,028)
Adjustments to reconcile net loss to net cash used in operating activities:
Bad debt expense	438	(126)
Depreciation and amortization	1,192	1,735
Stock-based compensation	1,733	2,361
Change in fair value of derivative liabilities	(10,175)	2,023
Change in fair value of contingent consideration related to acquisition	(300)	(200)
Accretion of interest and amortization of deferred financing costs	5,202	3,554
Payable in kind interest expense on term loan facility	2,040	1,943
Non-cash foreign exchange loss	1,141	(400)
Loss on debt extinguishment	730	0
Non-cash lease expense	48	53
Changes in operating assets and liabilities:
Accounts receivable and other receivables	2,860	(5,253)
Inventories	1,826	112
Prepaid expenses and other current assets	(409)	(2,367)
Accounts payable	(1,440)	5,378
Accrued payroll	3,676	(1,438)
Accrued expenses and other liabilities	232	995
Net cash used in operating activities	(9,322)	(13,658)
Cash flows from investing activities:
Purchases of property and equipment	(100)	(107)
Net cash used in investing activities	(100)	(107)
Cash flows from financing activities:
Deferred financing costs	(1,379)	0
Net proceeds from revolving line of credit	10,519	0
Minimum tax withholding paid on behalf of employees for stock-based compensation	(36)	(2)
Net cash provided by financing activities	9,104	(2)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(207)	(68)
Net increase (decrease) in cash, cash equivalents and restricted cash	(525)	(13,835)
Cash, cash equivalents and restricted cash, beginning of period	42,760	24,731
Total cash, cash equivalents and restricted cash, end of period	42,235	10,896
Supplemental disclosure of cash flow information:
Cash paid for interest	2,361	2,065
Cash paid for income taxes	94	88
Cash paid for amounts included in the measurement of operating lease liabilities	874	849
Non-cash investing and financing activities:
Acquisition of property and equipment included in accounts payable	0	59
Fair value of embedded derivative issued in connection with loan agreements (Note 6)	12,016	0
Fair value of common and preferred stock issued in connection with loan agreements	$ 2,000	$ 0