Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 122,461	$ 111,332
Accounts receivable (less allowances of $1,194 and $1,286, respectively)	23,382	22,638
Prepaid expenses and other	4,293	5,352
Inventory	2,100	2,291
Total current assets	152,236	141,613
Property and equipment, net	13,672	15,386
Goodwill	133,031	133,031
Other intangible assets, net	11,810	14,964
Deferred income tax assets (less valuation allowance of $0 and $45,777, respectively)	77,795	83,983
Other assets	2,588	1,445
TOTAL ASSETS	391,132	390,422
Current liabilities:
Accounts payable and accrued liabilities	7,238	9,247
Accrued compensation and benefits	11,471	10,864
Deferred revenue	30,183	27,045
Total current liabilities	48,892	47,156
Deferred revenue	712	741
Other long-term liabilities	9,074	8,972
TOTAL LIABILITIES	58,678	56,869
Commitments and contingencies
Stockholders’ equity:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	106,342	110,435
Retained earnings	226,110	223,116
TOTAL STOCKHOLDERS’ EQUITY	332,454	333,553
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 391,132	$ 390,422