CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
Business Combination, Step Acquisition, Remeasurement Gain and Gains (Losses) From Other Preexisting Relationships	$ 12,338	$ 0
Cash flows from operating activities:
Net loss	1,533	(5,178)
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash used in operating activities:
Depreciation and amortization	1,482	620
Stock-based compensation	1,384	1,157
Deferred income taxes, net	0	(40)
Foreign currency (gain) loss	151	0
Mark to market adjustment of warrants	0	21
Trade accounts receivable	(143)	11,188
Prepaid expenses, operating lease and other assets	(1,063)	(917)
Accounts payable	(259)	(10,622)
Accrued, lease and other liabilities	555	(1,654)
Net cash used in operating activities	(9,319)	(5,425)
Cash flows from investing activities:
Purchases of equipment, software, and leasehold improvements	(482)	(316)
Proceeds from sales and maturities of short-term investments	24	4,231
Acquisition, net of cash acquired	12,260	0
Net cash provided by investing activities	11,802	3,915
Cash flows from financing activities:
Proceeds from (Payments for) Other Financing Activities	450	0
Tax payments from shares withheld upon vesting of restricted stock	(271)	(232)
Net cash provided by (used in) financing activities	1,475	(232)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(207)	331
Net increase (decrease) in cash, cash equivalents and restricted cash	3,751	(1,411)
Cash, cash equivalents and restricted cash, beginning of period	37,191	53,596
Cash, cash equivalents, and restricted cash end of period	40,942	52,185
Non-cash investing activities:
Proceeds from Notes Payable	9,733	0
Repayments of Notes Payable	$ (8,437)	$ 0