Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and equivalents	$ 106,469	$ 84,497
Accounts receivable, net of allowance for doubtful accounts of $1,894 in 2012 and $1,585 in 2011	27,574	31,618
Inventories	18,675	16,033
Prepaid expenses	1,896	1,657
Foreign sales tax receivable	415	683
Deferred income taxes	1,714	2,382
Other current assets	41	343
Assets of discontinued operations	2,651	2,545
Total current assets	159,435	139,758
Property and equipment:
Furniture and fixtures	5,035	4,924
Office equipment	8,718	7,390
Property and equipment, gross	13,753	12,314
Accumulated depreciation	(9,701)	(7,909)
Property and equipment, net	4,052	4,405
Goodwill, net of accumulated amortization	13,176	12,910
Intangible assets, net of accumulated amortization	6,507	8,091
Other assets, net of accumulated amortization	3,336	3,759
Total assets	186,506	168,923
Current liabilities
Accounts payable	7,765	7,328
Deferred revenue	8,146	8,649
Accrued wages and payroll taxes	6,212	6,564
Income taxes payable	378	1,965
Other accrued expenses	3,688	3,162
Deferred compensation	2,424	1,908
Liabilities of discontinued operations	1,335	1,592
Total current liabilities	29,948	31,168
Deferred compensation	0	1,526
Other long-term liabilities	97	106
Deferred income taxes	141	324
Total liabilities	30,186	33,124
Stockholders' equity
Common stock: $.001 par value per share, 75,000 shares authorized; 39,205 and 38,193 shares issued and outstanding at December 31, 2012 and 2011, respectively	39	38
Preferred stock: 500 shares authorized, none issued and outstanding at December 31, 2012 or 2011	0	0
Additional paid-in capital	74,965	71,720
Accumulated income	81,256	65,658
Accumulated other comprehensive income	60	(1,617)
Total stockholders' equity	156,320	135,799
Total liabilities and stockholders' equity	$ 186,506	$ 168,923