Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 87,490	$ 90,642
Accounts receivable, net	3,843	3,972
Other current assets	2,176	2,256
Total current assets	93,509	96,870
Property and equipment, net	4,139	4,122
Intangible assets, net	30,263	30,369
Goodwill	13,074	13,074
Restricted cash	1,526	1,522
Total assets	142,511	145,957
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	548	3,359
Accrued expenses	9,437	9,555
Current portion of debt, net	4,766	2,445
Total current liabilities	14,751	15,359
Long-term debt, net	42,878	47,242
Contingent consideration liability	18,900	16,800
Deferred tax liability	1,480	1,575
Other liabilities	1,673	1,528
Total liabilities	79,682	82,504
Commitments and Contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value Authorized - 20,000 shares; issued and outstanding - none	0	0
Common stock, $0.0013 par value Authorized - 160,000 shares; issued - 74,959 shares in 2018 and 71,645 shares in 2017	97	93
Additional paid-in capital	635,709	609,829
Treasury stock at cost, 200 shares of common stock	(2,741)	(2,741)
Subscription receivable		(2,109)
Accumulated other comprehensive loss	(89)	(33)
Accumulated deficit	(570,147)	(541,586)
Total stockholders’ equity	62,829	63,453
Total liabilities and stockholders’ equity	$ 142,511	$ 145,957