CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income	$ 58,791	$ 7,287
Adjustments:
Depreciation and amortization	82,646	85,111
Long-lived asset impairment	3,563	4,122
Amortization of deferred financing costs	2,968	2,886
(Income) loss from discontinued operations, net of tax	(33,250)	1,162
Amortization of debt discount	5,567	4,960
Provision for (benefit from) doubtful accounts	(449)	101
Gain on sale of property, plant and equipment	(7,380)	(211)
Equity in income of non-consolidated affiliates	(4,665)	(37,339)
Amortization of payments to terminate interest rate swaps	500	3,888
Gain on remeasurement of intercompany balances	(3,575)	(4,887)
Stock-based compensation expense	4,131	4,438
Deferred income tax provision	2,527	(9,729)
Changes in assets and liabilities:
Accounts receivable and notes	(5,554)	69,691
Inventory	(43,207)	(24,289)
Costs and estimated earnings versus billings on uncompleted contracts	(63,833)	(49,629)
Other current assets	155	6,317
Accounts payable and other liabilities	26,733	(8,735)
Deferred revenue	(2,904)	(14,856)
Other	(3,336)	(2,639)
Net cash provided by continuing operations	19,428	37,649
Net cash provided by discontinued operations	3,314	1,011
Net cash provided by operating activities	22,742	38,660
Cash flows from investing activities:
Capital expenditures	(106,990)	(115,472)
Proceeds from sale of property, plant and equipment	14,945	9,785
Return of investments in non-consolidated affiliates	4,665	37,563
Increase in restricted cash		(15)
Cash invested in non-consolidated affiliates		(224)
Net cash used in continuing operations	(87,380)	(68,363)
Net cash provided by (used in) discontinued operations	30,674	(1,081)
Net cash used in investing activities	(56,706)	(69,444)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	1,204,037	844,500
Repayments of long-term debt	(1,145,251)	(913,048)
Payments for debt issuance costs	(11,373)	(525)
Net proceeds from the sale of Partnership units		114,568
Proceeds from stock options exercised	2,576
Proceeds from stock issued pursuant to our employee stock purchase plan	345	405
Purchases of treasury stock	(3,368)	(1,757)
Stock-based compensation excess tax benefit	1,311	194
Distributions to noncontrolling partners in the Partnership	(15,262)	(12,207)
Net cash provided by financing activities	33,015	32,130
Effect of exchange rate changes on cash and equivalents	(454)	243
Net increase (decrease) in cash and cash equivalents	(1,403)	1,589
Cash and cash equivalents at beginning of period	34,601	21,903
Cash and cash equivalents at end of period	$ 33,198	$ 23,492