Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash and equivalents	$ 72,441	$ 98,607
Short term investments	64,940	0
Accounts receivable, net of allowance for doubtful accounts of $223 in 2014 and $650 in 2013	29,994	28,528
Inventories	33,875	25,653
Prepaid expenses	2,312	2,719
Foreign sales tax receivable	598	543
Deferred income taxes	906	1,634
Other current assets	1,160	2,051
Assets of discontinued operations	0	1,910
Total current assets	206,226	161,645
Property and equipment:
Furniture and fixtures	5,231	5,221
Office equipment	10,751	10,407
Property and equipment, gross	15,982	15,628
Accumulated depreciation	(13,157)	(12,483)
Property and equipment, net	2,825	3,145
Goodwill, net of accumulated amortization	22,208	23,532
Intangible assets, net of accumulated amortization	12,819	16,733
Other assets, net of accumulated amortization	7,260	6,822
Total assets	251,338	211,877
Current liabilities
Accounts payable	10,680	6,378
Deferred revenue	17,830	15,703
Accrued wages and payroll taxes	8,458	7,067
Income taxes payable	1,899	4,087
Other accrued expenses	5,413	3,841
Deferred compensation	806	0
Liabilities of discontinued operations	111	30
Total current liabilities	45,197	37,106
Deferred compensation	0	115
Other long-term liabilities	55	57
Deferred income taxes	213	321
Total liabilities	45,465	37,599
Stockholders' equity
Preferred stock: 500 shares authorized, none issued and outstanding at December 31, 2014 or 2013	0	0
Common stock: $.001 par value per share, 75,000 shares authorized; 39,660 and 39,619 shares issued and outstanding at December 31, 2014 and 2013, respectively	40	40
Additional paid-in capital	82,450	79,871
Accumulated income	125,885	92,401
Accumulated other comprehensive income	(2,502)	1,966
Total stockholders' equity	205,873	174,278
Total liabilities and stockholders' equity	$ 251,338	$ 211,877