Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 122,222,000	$ 126,158,000
Accounts receivable, net of allowance of $200 and $299, respectively	34,786,000	33,438,000
Prepaid expenses and other current assets	4,728,000	3,655,000
Total current assets	161,736,000	163,251,000
Property and equipment, net	16,076,000	11,325,000
Deferred tax assets	10,106,000	10,299,000
Goodwill	215,000	215,000
Intangible assets, net	4,603,000	5,028,000
Other non-current assets	9,497,000	1,651,000
Total assets	202,233,000	191,769,000
Current liabilities:
Accounts payable	2,469,000	1,293,000
Accrued compensation and related benefits	5,150,000	4,812,000
Accrued and other current liabilities	2,924,000	2,382,000
Deferred revenues – current portion	5,740,000	4,702,000
Billings in excess of recognized revenue	312,000	1,267,000
Total current liabilities	16,595,000	14,456,000
Long-term income taxes payable	2,594,000	2,540,000
Other non-current liabilities	328,000	466,000
Total liabilities	19,517,000	17,462,000
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.00015 par value, 5,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.00015 par value, 70,000 shares authorized: shares issued 37,880 and 37,476, respectively; shares outstanding 31,311 and 31,111, respectively	5,000	5,000
Additional paid-in-capital	272,886,000	266,008,000
Treasury stock at cost, 6,569 and 6,365 shares in 2016 and 2015, respectively	(53,301,000)	(50,383,000)
Accumulated deficit	(35,504,000)	(39,780,000)
Accumulated other comprehensive loss	(1,370,000)	(1,543,000)
Total stockholders’ equity	182,716,000	174,307,000
Total liabilities and stockholders’ equity	$ 202,233,000	$ 191,769,000