Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 61,011	$ 49,648
Accounts receivable (less allowance for doubtful accounts of $2,931 at March 31, 2013 and $3,402 at December 31, 2012)	126,579	141,347
Inventory	4,975	5,067
Prepaid expenses	10,854	9,178
Current deferred income tax asset	7,052	8,181
Prepaid income tax	1,583	4,491
Other current assets	10,344	7,588
Total current assets	222,398	225,500
Property, plant and equipment (less accumulated depreciation of $232,170 at March 31, 2013 and $231,167 at December 31, 2012)	57,646	61,971
Goodwill	408,715	408,715
Other intangible assets (less accumulated amortization of $9,596 at March 31, 2013 and $9,541 at December 31, 2012)	5,204	5,259
Other assets	5,018	4,767
Total assets	698,981	706,212
Current liabilities
Current maturities of long-term debt	12,250	12,250
Accounts payable	41,510	42,187
Accrued payroll and related expenses	13,438	16,777
Deferred revenue and customer advances	35,381	36,924
Income taxes payable	1,987	1,518
Customer postage and program deposits	15,111	19,892
Other current liabilities	8,294	10,649
Total current liabilities	127,971	140,197
Long-term debt	94,938	98,000
Other long-term liabilities (including deferred income taxes of $57,056 at March 31, 2013 and $53,935 at December 31, 2012)	141,593	139,851
Total liabilities	364,502	378,048
Stockholders' equity
Common stock, $1 par value per share, 250,000,000 shares authorized. 118,956,799 shares issued at March 31, 2013 and 118,737,456 shares issued at December 31, 2012	118,957	118,737
Additional paid-in capital	341,837	341,586
Retained earnings	1,172,619	1,165,952
Less treasury stock: 56,451,821 shares at cost at March 31, 2013 and 56,348,026 shares at cost at December 31, 2012	(1,249,073)	(1,248,377)
Accumulated other comprehensive loss	(49,861)	(49,734)
Total stockholders' equity	334,479	328,164
Total liabilities and stockholders' equity	$ 698,981	$ 706,212