Consolidated Statement of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities
Net income	$ 18,404,000	$ 10,710,000
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities
Depreciation, amortization and accretion	167,753,000	189,845,000
Bad debts expense	20,492,000	16,910,000
Stock-based compensation expense	4,955,000	5,036,000
Deferred income taxes, net	(4,817,000)	7,048,000
Equity in earnings of unconsolidated entities	(37,075,000)	(26,835,000)
Distributions from unconsolidated entities	12,818,000	5,836,000
(Gain) loss on asset disposals, net	1,934,000	5,434,000
(Gain) loss on sale of business and other exit costs, net	(6,900,000)	6,931,000
(Gain) loss on license sales and exchanges	(91,446,000)
Noncash interest expense	269,000	262,000
Other operating activities	47,000	250,000
Changes in assets and liabilities from operations
Accounts receivable	81,980,000	33,611,000
Inventory	19,306,000	16,750,000
Accounts payable - trade	(38,245,000)	4,644,000
Accounts payable - affiliate	(2,312,000)	(1,933,000)
Customer deposits and deferred revenues	(1,510,000)	8,862,000
Accrued taxes	(15,403,000)	6,175,000
Accrued interest	9,182,000	9,201,000
Other assets and liabilities	(75,896,000)	(75,122,000)
Cash flows from operating activities	63,536,000	223,615,000
Cash flows from investing activities
Cash used for additions to property, plant and equipment	(109,498,000)	(151,024,000)
Cash paid for aquisitions and licenses	(9,135,000)	(14,150,000)
Cash received from divestitures	103,042,000
Cash received for investments	10,000,000
Other investing activities	584,000	3,654,000
Cash flows from investing activities	(5,007,000)	(161,520,000)
Cash flows from financing activities
Repayment of long-term debt	(23,000)	(61,000)
Common shares reissued for benefit plans, net of tax payments	316,000	123,000
Common shares repurchased	(2,000,000)	(18,425,000)
Distributions to noncontrolling interests	(346,000)	(2,396,000)
Other financing activities		2,000
Cash flows from financing activities	(2,053,000)	(20,757,000)
Net increase in cash and cash equivalents	56,476,000	41,338,000
Cash and cash equivalents
Beginning of period	342,065,000	378,358,000
End of period	$ 398,541,000	$ 419,696,000