Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash Flows from Operating Activities:
Net (loss) income	$ (724)	$ 39,922	$ (15,687)
Adjustments to reconcile (loss) income from operations to net cash flows from operating activities:
Depreciation and amortization	47,762	49,332	40,069
Contract termination fees	0	5,663	0
Impairment of long-lived assets	0	0	9,000
Losses/(gains) on sale of property, plant and equipment	166	474	(124)
Loss on sale of investments	3,000	0	0
Deferred income taxes	(5,065)	8,297	9,786
Excess tax benefits of share-based compensation plans	0	(4,206)	(5,814)
Stock and deferred compensation plans	7,148	8,223	7,197
Pension expense, net of payments	6,331	5,903	4,840
Other changes in certain working capital accounts, net	(30,069)	60,594	(41,779)
Miscellaneous, net	4,956	(1,620)	7,299
Net cash provided by operating activities	33,505	172,582	14,787
Cash Flows from Investing Activities:
Acquisitions	0	(266)	(216,143)
Additions to property, plant and equipment	(20,522)	(30,210)	(12,183)
Changes in restricted cash	1,800	0	(7,510)
Purchase of investments	(1,575)	(5,066)	(9,045)
Miscellaneous, net	414	3,118	4,388
Net cash used in investing activities	(19,883)	(32,424)	(240,493)
Cash Flows from Financing Activities:
Increases in long-term debt	200,000	0	212,000
Payments on long-term debt	(196,100)	(15,900)	0
Payments of financing costs	(2,470)	(993)	(8,871)
Repurchase of Class A Common shares	(74,199)	(23,564)	(51,383)
Proceeds from employee stock options	46,624	18,215	2,514
Tax payments related to shares withheld for vested stock and RSUs	(6,270)	(7,658)	(9,596)
Excess tax benefits from stock compensation plans	0	4,206	5,814
Miscellaneous, net	(2,594)	289	(1,807)
Net cash (used in) provided by financing activities	(35,009)	(25,405)	148,671
(Decrease) increase in cash and cash equivalents	(21,387)	114,753	(77,035)
Cash and cash equivalents:
Beginning of year	242,642	127,889	204,924
End of year	$ 221,255	$ 242,642	$ 127,889