Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 312	$ 1,326
Short-term investments available-for-sale	50	25
Accounts receivable (less allowance for losses of $ 1,016 in 2012 and $990 in 2011)	100,460	90,012
Prepaid expenses	8,159	8,348
Other current assets	3,184	2,286
Deferred income taxes	5,095	5,095
Total current assets	117,260	107,092
Accounts receivable, long-term portion	576	2,095
Property and equipment, net	42,500	40,915
Non-current investments available-for-sale	1,903	1,953
Other assets:
Goodwill	112,750	106,094
Other intangibles, net	43,990	35,628
Sundry	1,467	1,614
Total assets	320,446	295,391
Current liabilities:
Accounts payable	1,768	3,211
Accrued liabilities	22,523	24,751
Deferred revenue	125,721	123,678
Total current liabilities	150,012	151,640
Revolving line of credit	65,700	60,700
Deferred income taxes	5,127	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	153,988	152,859
Accumulated other comprehensive loss, net of tax	(355)	(355)
Retained earnings	142,901	130,115
Treasury stock, at cost; 17,869,069 and 18,176,050 shares in 2012 and 2011, respectively	(197,408)	(204,990)
Total shareholders' equity	99,607	78,110
Liabilities and Shareholders' equity, Total	$ 320,446	$ 295,391