Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 63,875	$ 49,648
Accounts receivable (less allowance for doubtful accounts of $2,497 at June 30, 2013 and $3,402 at December 31, 2012)	131,498	141,347
Inventory	4,353	5,067
Prepaid expenses	9,844	9,178
Current deferred income tax asset	8,206	8,181
Prepaid income tax	1,175	4,491
Other current assets	9,043	7,588
Total current assets	227,994	225,500
Property, plant and equipment (less accumulated depreciation of $233,597 at June 30, 2013 and $231,167 at December 31, 2012)	57,887	61,971
Goodwill	408,715	408,715
Other intangible assets (less accumulated amortization of $9,651 at June 30, 2013 and $9,541 at December 31, 2012)	5,149	5,259
Other assets	5,690	4,767
Total assets	705,435	706,212
Current liabilities
Current maturities of long-term debt	12,250	12,250
Accounts payable	41,358	42,187
Accrued payroll and related expenses	16,077	16,777
Deferred revenue and customer advances	34,872	36,924
Income taxes payable	688	1,518
Customer postage and program deposits	19,040	19,892
Other current liabilities	9,770	10,649
Total current liabilities	134,055	140,197
Long-term debt	91,875	98,000
Other long-term liabilities (including deferred income taxes of $58,587 at June 30, 2013 and $53,935 at December 31, 2012)	140,303	139,851
Total liabilities	366,233	378,048
Stockholders' equity
Common stock,$1 par value per share,250,000,000 shares authorized. 119,063,456 shares issued at June 30,2013 and 118,737,456 shares issued at December 31,2012	119,063	118,737
Additional paid-in capital	343,724	341,586
Retained earnings	1,175,560	1,165,952
Less treasury stock: 56,532,637 shares at cost at June 30, 2013 and 56,348,026 shares at cost at December 31, 2012	(1,249,698)	(1,248,377)
Accumulated other comprehensive loss	(49,447)	(49,734)
Total stockholders' equity	339,202	328,164
Total liabilities and stockholders' equity	$ 705,435	$ 706,212