Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 103,400	$ 120,744
Short term investments	5,956	4,414
Accounts receivable, net of allowance of $5,094 and $5,711 in 2011 and 2010, respectively	52,995	47,419
Deferred income taxes	7,486	7,214
Income taxes receivable	1,609	2,446
Prepaid expenses and other current assets	6,979	6,743
Total current assets	178,425	188,980
Property and equipment, net	13,516	14,833
Long-term investments	909	1,711
Goodwill, net	62,281	62,265
Acquisition-related intangible assets, net	309	1,186
Deferred income taxes	9,204	8,816
Other assets	3,118	2,673
Total assets	267,762	280,464
Current liabilities:
Accounts payable	8,927	7,745
Accrued compensation and benefits	13,959	19,807
Accrued and other liabilities	13,950	13,856
Deferred revenue	50,335	44,974
Total current liabilities	87,171	86,382
Other non-current liabilities	9,888	10,282
Shareholders' equity:
Preferred stock, no par value; 20,000,000 shares authorized, no shares issued or outstanding in 2011 or 2010	0	0
Common stock, $.01 par value; 100,000,000 shares authorized; 21,106,727 and 21,729,789 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	211	217
Additional paid-in capital	0	487
Retained earnings	171,371	184,152
Accumulated other comprehensive loss	(879)	(1,056)
Total shareholders' equity	170,703	183,800
Total liabilities and shareholders' equity	$ 267,762	$ 280,464