Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 36,185	$ 19,715
Trade accounts receivable, net of allowance for doubtful accounts of $4,295 as of March 31, 2012, and $4,615 as of December 31, 2011	51,402	62,886
Prepaid expenses and other current assets	6,516	7,141
Deferred tax assets	5,409	6,398
Total current assets	99,512	96,140
Equity and other investments	9,608	14,913
Property and equipment, net	67,693	70,651
Goodwill, net	45,627	45,430
Other intangibles, net	10,067	10,526
Noncurrent deferred tax assets	1,637
Other noncurrent assets	1,202	1,308
Total assets	235,346	238,968
Liabilities and Stockholders' Equity
Accounts payable	9,254	10,534
Accrued expenses and other current liabilities	29,198	32,276
Deferred revenue	38,137	37,080
Total current liabilities	76,589	79,890
Noncurrent deferred tax liabilities		1,302
Other noncurrent liabilities	32,545	30,960
Total liabilities	109,134	112,152
Stockholders' equity
Preferred stock, $100.00 par value, 750 shares authorized, no shares issued
Common stock, $0.50 par value, 500,000 shares authorized, 32,338 shares issued as of March 31, 2012, and December 31, 2011	16,169	16,169
Retained earnings	127,696	128,772
Common stock held in treasury, 5,533 shares as of March 31, 2012, and 5,048 shares as of December 31, 2011	(2,767)	(2,524)
Accumulated other comprehensive loss	(14,886)	(15,601)
Total stockholders' equity	126,212	126,816
Total liabilities and stockholders' equity	$ 235,346	$ 238,968