CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 38,641	$ 5,580
Accounts receivable, less allowance for doubtful accounts of $52 and $69, respectively	14,201	11,545
Prepaid and other	1,010	388
Current assets of discontinued operations	0	79,530
Total current assets	53,852	97,043
Property and equipment, net	5	1
Deferred tax assets, non-current	292	324
Other assets, non-current	373	371
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	13,901
Total assets	54,522	111,640
Current liabilities:
Accounts payable	806	1,193
Accrued expenses and other current liabilities	8,901	7,259
Current liabilities of discontinued operations	366	51,952
Total current liabilities	10,073	60,404
Income tax payable, non-current	1,978	1,682
Other non-current liabilities	578	192
Total non-current liabilities	0	6,210
Total liabilities	12,629	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 36,110 and 34,959 shares, respectively	34	34
Additional paid-in capital	484,432	483,558
Accumulated deficit	(434,062)	(443,419)
Accumulated other comprehensive income, net of applicable tax	(244)	10,709
Treasury stock, 4,079 and 3,800 shares, respectively, at cost	(8,267)	(7,730)
Total stockholders' equity	41,893	43,152
Total liabilities and stockholders' equity	$ 54,522	$ 111,640