Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 82,982	$ 61,046
Accounts receivable, net	17,114	21,580
Prepaid expenses and other	6,156	5,836
Inventory	2,544	3,257
Escrow receivables	0	275
Deferred income tax assets, net	3,817	3,915
Total current assets	112,613	95,909
Property and equipment, net	21,247	20,809
Goodwill	133,031	133,031
Other intangible assets, net	26,584	30,333
Deferred income tax assets, net	29,765	41,239
Other assets	1,123	1,306
TOTAL ASSETS	324,363	322,627
Current liabilities:
Accounts payable and accrued liabilities	10,805	12,659
Accrued compensation and benefits	11,863	17,806
Consideration payable	0	275
Deferred revenue	27,966	29,986
Total current liabilities	50,634	60,726
Deferred revenue	421	693
Other long-term liabilities	9,469	9,789
TOTAL LIABILITIES	60,524	71,208
Commitments and contingencies
Stockholders' equity:
Preferred stock
Common stock	2	2
Additional paid-in capital	126,432	125,212
Retained earnings	137,405	126,205
TOTAL STOCKHOLDERS' EQUITY	263,839	251,419
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 324,363	$ 322,627