Condensed Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 9,932	$ 1,326
Short-term investments available-for-sale		25
Accounts receivable (less allowance for losses of $ 1,071in 2012 and $990 in 2011)	58,888	90,012
Prepaid expenses	8,361	8,348
Other current assets	1,403	2,286
Deferred income taxes	5,095	5,095
Total current assets	83,679	107,092
Accounts receivable, long-term portion	1,400	2,095
Property and equipment, net	40,721	40,915
Non-current investments available-for-sale	1,953	1,953
Other assets:
Goodwill	108,166	106,094
Other intangibles, net	40,359	35,628
Sundry	1,485	1,614
Total assets	277,763	295,391
Current liabilities:
Accounts payable	2,582	3,211
Accrued liabilities	14,933	24,151
Deferred revenue	109,381	123,678
Income taxes payable	2,126	600
Total current liabilities	129,022	151,640
Revolving line of credit	56,000	60,700
Deferred income taxes	4,994	4,941
Commitments and contingencies
Shareholders' equity:
Preferred stock, $10.00 par value; 1,000,000 shares authorized, none issued
Common stock, $0.01 par value; 100,000,000 shares authorized; 48,147,969 shares issued in 2012 and 2011	481	481
Additional paid-in capital	154,012	152,859
Accumulated other comprehensive loss, net of tax	(355)	(355)
Retained earnings	135,796	130,115
Treasury stock, at cost; 18,062,975 and 18,176,050 shares in 2012 and 2011, respectively	(202,187)	(204,990)
Total shareholders' equity	87,747	78,110
Liabilities and Shareholders' equity, Total	$ 277,763	$ 295,391