Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 42,451,000		$ 57,354,000
Restricted cash, cash equivalents and marketable securities (all related to variable interest entities ("VIEs"))	127,452,000		51,065,000
Receivables:
Trade	75,224,000		95,365,000
Related entity	506,000		442,000
Other	9,165,000		11,049,000
Due from Parent	970,000		382,000
Inventories	17,337,000		22,289,000
Costs and estimated earnings in excess of billings on uncompleted contracts	14,784,000		21,217,000
Deferred income taxes	2,613,000		523,000
Prepaid expenses and other	36,879,000		29,654,000
Total current assets	327,381,000		289,340,000
Unconsolidated investments	1,339,000	[1]	7,076,000
Deposits and other	21,679,000		22,114,000
Deferred income taxes			891,000
Deferred charges	35,399,000		36,738,000
Property, plant and equipment, net ($1,378,484 and $1,381,083 related to VIEs, respectively)	1,459,316,000		1,452,336,000
Construction-in-process ($143,548 and $136,947 related to VIEs, respectively)	268,349,000		288,827,000
Deferred financing and lease costs, net	28,969,000		30,178,000
Intangible assets, net	29,481,000		31,933,000
Total assets	2,171,913,000	[1]	2,159,433,000
Current liabilities:
Accounts payable and accrued expenses	78,411,000		98,047,000
Billings in excess of costs and estimated earnings on uncompleted contracts	45,310,000		7,903,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	31,211,000		31,137,000
Other loans	17,995,000		20,377,000
Full recourse	24,116,000		28,875,000
Total current liabilities	197,043,000		186,339,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	379,036,000		270,310,000
Other loans	269,123,000		311,078,000
Full recourse:
Senior unsecured bonds (plus unamortized premium based upon 7% of $898)	250,366,000		250,596,000
Other loans	40,298,000		53,467,000
Revolving credit lines with banks	28,100,000		112,017,000
Liability associated with sale of tax benefits	44,757,000		60,985,000
Deferred lease income	61,294,000		63,496,000
Deferred income taxes	67,328,000		55,035,000
Liability for unrecognized tax benefits	5,606,000		4,950,000
Liabilities for severance pay	21,984,000		23,841,000
Asset retirement obligation	19,801,000		18,679,000
Other long-term liabilities	3,633,000		3,529,000
Total liabilities	1,388,369,000		1,414,322,000
Commitments and contingencies (Note 10)
The Company's stockholders' equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 45,530,627 and 45,460,653 shares issued and outstanding as of September 30, 2014 and December 31, 2013, respectively	46,000		46,000
Additional paid-in capital	740,651,000		735,295,000
Retained earnings (accumulated deficit)	36,835,000		(3,088,000)
Accumulated other comprehensive income (loss)	(5,710,000)		487,000
	771,822,000		732,740,000
Noncontrolling interest	11,722,000		12,371,000
Total equity	783,544,000		745,111,000
Total liabilities and equity	2,171,913,000		2,159,433,000
Variable Interest Entity, Primary Beneficiary [Member]
Receivables:
Property, plant and equipment, net ($1,378,484 and $1,381,083 related to VIEs, respectively)	1,378,484,000		1,381,083,000
Construction-in-process ($143,548 and $136,947 related to VIEs, respectively)	$ 143,548,000		$ 136,947,000

[1] Including unconsolidated investments