Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 47,927,000		$ 57,354,000
Restricted cash and cash equivalents (all related to variable interest entities ("VIEs"))	74,406,000		51,065,000
Receivables:
Trade	55,676,000		95,365,000
Related entity	442,000		442,000
Other	28,756,000		11,049,000
Due from Parent	534,000		382,000
Inventories	22,671,000		22,289,000
Costs and estimated earnings in excess of billings on uncompleted contracts	27,789,000		21,217,000
Deferred income taxes	684,000		523,000
Prepaid expenses and other	33,728,000		29,654,000
Total current assets	292,613,000		289,340,000
Unconsolidated investments	7,510,000		7,076,000
Deposits and other	24,743,000		22,114,000
Deferred income taxes			891,000
Deferred charges	35,881,000		36,738,000
Property, plant and equipment, net ($1,394,424 and $1,381,083 related to VIEs, respectively)	1,463,574,000		1,452,336,000
Construction-in-process ($54,535 and $136,947 related to VIEs, respectively)	249,777,000		288,827,000
Deferred financing and lease costs, net	29,127,000		30,178,000
Intangible assets, net	31,122,000		31,933,000
Total assets	2,134,347,000	[1]	2,159,433,000
Current liabilities:
Accounts payable and accrued expenses	93,820,000		98,047,000
Short-term revolving credit lines with banks (full recourse)	34,733,000
Billings in excess of costs and estimated earnings on uncompleted contracts	3,817,000		7,903,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	29,337,000		31,137,000
Other loans	21,127,000		20,377,000
Full recourse:	28,994,000		28,875,000
Total current liabilities	211,828,000		186,339,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	256,366,000		270,310,000
Other loans	305,762,000		311,078,000
Full recourse:
Senior unsecured bonds (plus unamortized premium based upon 7% of $1,051)	250,520,000		250,596,000
Other loans	49,887,000		53,467,000
Revolving credit lines with banks	62,467,000		112,017,000
Liability associated with sale of tax benefits	56,090,000		60,985,000
Deferred lease income	62,762,000		63,496,000
Deferred income taxes	59,322,000		55,035,000
Liability for unrecognized tax benefits	5,132,000		4,950,000
Liabilities for severance pay	24,182,000		23,841,000
Asset retirement obligation	19,053,000		18,679,000
Other long-term liabilities	5,282,000		3,529,000
Total liabilities	1,368,653,000		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; 45,478,717 and 45,460,653 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	46,000		46,000
Additional paid-in capital	736,735,000		735,295,000
Retained earnings (accumulated deficit)	15,737,000		(3,088,000)
Accumulated other comprehensive income	451,000		487,000
	752,969,000		732,740,000
Noncontrolling interest	12,725,000		12,371,000
Total equity	765,694,000		745,111,000
Total liabilities and equity	2,134,347,000		2,159,433,000
Variable Interest Entity, Primary Beneficiary [Member]
Receivables:
Property, plant and equipment, net ($1,394,424 and $1,381,083 related to VIEs, respectively)	1,394,424,000		1,381,083,000
Construction-in-process ($54,535 and $136,947 related to VIEs, respectively)	$ 54,535,000		$ 136,947,000

[1] Including unconsolidated investments