Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 8,215	$ 18,925
Trade accounts receivable, net of allowance for doubtful accounts of $4,568 as of June 30, 2011, and $4,708 as of December 31, 2010	58,551	59,808
Prepaid expenses and other current assets	8,739	11,332
Deferred tax assets	4,707	4,758
Total current assets	80,212	94,823
Equity and other investments	17,256	18,385
Property and equipment, net	68,854	70,332
Goodwill, net	38,895	38,895
Other intangibles, net	5,701	6,272
Other noncurrent assets	267	534
Total assets	211,185	229,241
Current liabilities
Accounts payable	9,808	10,007
Accrued expenses and other current liabilities	20,873	27,670
Current portion of debt	5,000	53,000
Deferred revenue	47,746	36,479
Total current liabilities	83,427	127,156
Noncurrent deferred tax liabilities	2,241	2,695
Other noncurrent liabilities	22,974	21,739
Total liabilities	108,642	151,590
Stockholders' equity
Preferred stock, $100.00 par value, 750 shares authorized, no shares issued	0	0
Common stock, $0.50 par value, 500,000 shares authorized, 32,338 shares issued as of June 30, 2011, and December 31, 2010	16,169	16,169
Retained earnings	98,541	74,184
Common stock held in treasury, 5,139 shares as of June 30, 2011, and 5,285 shares as of December 31, 2010	(2,570)	(2,642)
Accumulated other comprehensive loss	(9,597)	(10,060)
Total stockholders' equity	102,543	77,651
Total liabilities and stockholders' equity	$ 211,185	$ 229,241