Condednsed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities:
Net income	$ 514	$ 1,001
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	23,588	24,909
Contract termination fees	0	5,663
Gains on sale of property, plant and equipment	(37)	(30)
Deferred income taxes	2,041	2,794
Excess tax benefits of share-based compensation plans	0	(4,311)
Stock and deferred compensation plans	4,757	4,881
Pension expense, net of payments	3,113	1,863
Other changes in certain working capital accounts, net	(31,044)	29,258
Miscellaneous, net	1,960	1,910
Net cash provided by operating activities	4,892	67,938
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(12,169)	(6,086)
Purchase of investments	(1,375)	(1,272)
Changes in restricted cash	1,800	0
Miscellaneous, net	320	486
Net cash used in investing activities	(11,424)	(6,872)
Cash Flows from Financing Activities:
Payments on long-term debt	(7,950)	(7,950)
Repurchase of Class A Common shares	(34,910)	(16,407)
Proceeds from employee stock options	33,675	4,605
Tax payments related to shares withheld for vested stock and RSUs	(5,970)	(7,423)
Excess tax benefits from stock compensation plans	0	4,311
Miscellaneous, net	(2,854)	1,015
Net cash used in financing activities	(18,009)	(21,849)
(Decrease) increase in cash and cash equivalents	(24,541)	39,217
Cash and cash equivalents:
Beginning of year	242,642	127,889
End of year	218,101	167,106
Supplemental Cash Flow Disclosures
Interest paid	3,917	4,735
Income taxes paid	$ 111	$ 741