CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (18,085)	$ (17,144)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,738	2,402
Stock-based compensation	2,113	3,045
Equity in net loss of Napster	737	1,097
Deferred income taxes, net	5	(55)
Fair value of warrants granted in 2015 and 2017, net of subsequent mark to market adjustments in 2018 and 2017	78	(367)
Trade accounts receivable	16,754	(3,516)
Prepaid expenses and other assets	(979)	1,072
Accounts payable	(15,235)	(447)
Accrued and other liabilities	(2,754)	(3,630)
Net cash used in operating activities	(15,628)	(17,543)
Cash flows from investing activities:
Purchases of equipment, software, and leasehold improvements	(698)	(541)
Purchases of short-term investments	0	(13,905)
Proceeds from sales and maturities of short-term investments	7,607	43,754
Acquisition, net of cash acquired	(4,192)	0
Advance to Napster	0	(1,500)
Net cash provided by investing activities	2,717	27,808
Cash flows from financing activities:
Proceeds from issuance of common stock (stock options and stock purchase plan)	114	130
Tax payments from shares withheld upon vesting of restricted stock	(243)	(338)
Net cash used in financing activities	(129)	(208)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(962)	1,519
Net increase (decrease) in cash, cash equivalents and restricted cash	(14,002)	11,576
Cash, cash equivalents and restricted cash, beginning of period	53,596	36,421
Cash, cash equivalents, and restricted cash end of period	39,594	47,997
Supplemental disclosure of cash flow information:
Cash received from income tax refunds	169	419
Cash paid for income taxes	862	1,124
Non-cash investing activities:
Increase (decrease) in accrued purchases of equipment, software, and leasehold improvements	$ (92)	$ 42