Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 78,876	$ 6,406
Accounts receivable (less allowance for losses of $1,113 in 2013 and $1,621 in 2012)	106,570	99,212
Prepaid expenses	13,522	9,000
Income tax receivable	9,721	406
Other current assets	787	1,074
Deferred income taxes	7,759	5,955
Total current assets	217,235	122,053
Accounts receivable, long-term portion	588	1,187
Property and equipment, net	64,844	45,381
Non-current investments available-for-sale	1,288	2,037
Other assets:
Goodwill	121,011	121,011
Other intangibles, net	38,986	45,800
Sundry	536	1,197
Total assets	444,488	338,666
Current liabilities:
Accounts payable	2,533	3,167
Accrued liabilities	32,839	26,018
Deferred revenue	156,738	140,550
Total current liabilities	192,110	169,735
Revolving line of credit		18,000
Deferred income taxes	6,059	5,632
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 2013 and 2012	481	481
Additional paid-in capital	182,176	154,018
Accumulated other comprehensive loss, net of tax	(46)	(268)
Retained earnings	202,210	163,109
Treasury stock, at cost; 15,309,940 and 16,816,903 shares in 2013 and 2012, respectively	(138,502)	(172,041)
Total shareholders' equity	246,319	145,299
Liabilities and Shareholders' equity, Total	$ 444,488	$ 338,666