CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 38,436	$ 5,580
Accounts receivable, less allowance for doubtful accounts of $52 and $69, respectively	14,500	11,545
Prepaid and other	594	388
Current assets of discontinued operations	0	79,530
Total current assets	53,530	97,043
Property and equipment, net	149	1
Deferred tax assets, non-current	350	324
Restricted cash, non-current	352	102
Other assets, non-current	55	269
Non-current assets of discontinued operations	0	13,901
Total assets	54,436	111,640
Current liabilities:
Accounts payable	1,206	1,193
Accrued expenses and other current liabilities	9,561	7,259
Current liabilities of discontinued operations	61	51,952
Total current liabilities	10,828	60,404
Income tax payable, non-current	2,001	1,682
Other non-current liabilities	295	192
Total non-current liabilities	0	6,210
Total liabilities	13,124	68,488
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value, 10,000 shares authorized; none issued or outstanding	0	0
Common stock, $0.001 par value, 100,000 shares authorized; issued 36,135 and 34,959 shares, respectively	34	34
Additional paid-in capital	484,890	483,558
Accumulated deficit	(434,932)	(443,419)
Accumulated other comprehensive income, net of applicable tax	(399)	10,709
Treasury stock, 4,087 and 3,800 shares, respectively, at cost	(8,281)	(7,730)
Total stockholders' equity	41,312	43,152
Total liabilities and stockholders' equity	$ 54,436	$ 111,640