CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash	$ 22,086	$ 22,987
Accounts receivable, net of allowance for doubtful accounts of $1,863 and $3,181	33,146	43,148
Income taxes receivable	2,141	731
Prepaid and other current assets	4,482	3,312
Total current assets	61,855	70,178
Fixed assets, net	17,119	16,610
Acquired intangible assets, net	47,440	49,120
Goodwill	176,641	171,745
Deferred income taxes	365	306
Other assets	2,584	2,136
Total assets	306,004	310,095
Current liabilities
Accounts payable and accrued expenses	20,572	20,220
Deferred revenue	81,823	84,615
Income taxes payable	1,302	3,467
Total current liabilities	103,697	108,302
Long-term debt, net	68,402	84,760
Deferred income taxes	7,909	7,901
Accrual for unrecognized tax benefits	4,871	2,513
Other long-term liabilities	2,809	2,736
Total liabilities	187,688	206,212
Commitments and contingencies (Note 6)
Stockholders' equity
Convertible preferred stock, $.01 par value, authorized 20,000 shares; no shares issued and outstanding	0	0
Common stock, $.01 par value, authorized 240,000; issued 83,026 and 81,989 shares, respectively; outstanding: 50,416 and 49,591 shares, respectively	829	820
Additional paid-in capital	373,203	366,247
Accumulated other comprehensive loss	(27,623)	(32,276)
Accumulated earnings	48,018	44,078
Treasury stock, 32,609 and 32,398 shares, respectively	(276,111)	(274,986)
Total stockholders’ equity	118,316	103,883
Total liabilities and stockholders’ equity	$ 306,004	$ 310,095