Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	[1]
Current assets
Cash and cash equivalents	$ 7,464	$ 10,210
Restricted cash	1,402	1,293
Accounts receivable, net	10,535	12,906
Prepaid expenses and other current assets	5,050	4,642
Total current assets	24,451	29,051
Property and equipment, net	11,025	11,815
Right-of-use assets, operating leases	11,787
Goodwill	1,911	1,943
Intangible assets, net	1,406	1,938
Other non-current assets	1,946	2,045
Total assets	52,526	46,792
Current liabilities
Accounts payable	2,300	2,699
Total accrued expenses and other current liabilities	8,966	10,632
Operating lease liabilities	6,335
Total current liabilities	17,601	13,331
Operating lease liabilities, non-current	7,106
Other long-term liabilities	2,496	4,090
Total liabilities	27,203	17,421
Commitments and contingencies (Note 14)
Stockholders’ equity
Common stock, $0.001 par value - 142,857 shares authorized, 5,954 and 5,938 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	6	6
Additional paid-in capital	295,745	295,116
Accumulated deficit	(269,319)	(264,713)
Accumulated other comprehensive loss	(1,109)	(1,038)
Total stockholders’ equity	25,323	29,371
Total liabilities and stockholders’ equity	$ 52,526	$ 46,792

[1] Derived from the Company's audited consolidated financial statements as of December 31, 2018.