Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 80,120,000	$ 57,354,000
Restricted cash, cash equivalents and marketable securities (all related to variable interest entities ("VIEs"))	54,077,000	51,065,000
Receivables:
Trade	78,764,000	95,365,000
Related entity	442,000	442,000
Other	7,963,000	11,049,000
Due from Parent	607,000	382,000
Inventories	18,292,000	22,289,000
Costs and estimated earnings in excess of billings on uncompleted contracts	25,918,000	21,217,000
Deferred income taxes	2,484,000	523,000
Prepaid expenses and other	38,156,000	29,654,000
Total current assets	306,823,000	289,340,000
Unconsolidated investments	3,308,000	7,076,000
Deposits and other	23,480,000	22,114,000
Deferred income taxes		891,000
Deferred charges	35,674,000	36,738,000
Property, plant and equipment, net ($1,399,678 and $1,381,083 related to VIEs, respectively)	1,468,012,000	1,452,336,000
Construction-in-process ($55,181 and $136,947 related to VIEs, respectively)	247,901,000	288,827,000
Deferred financing and lease costs, net	29,429,000	30,178,000
Intangible assets, net	30,302,000	31,933,000
Total assets	2,144,929,000	2,159,433,000
Current liabilities:
Accounts payable and accrued expenses	79,800,000	98,047,000
Short term revolving credit lines with banks (full recourse)	42,600,000
Billings in excess of costs and estimated earnings on uncompleted contracts	28,185,000	7,903,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	30,208,000	31,137,000
Other loans	21,207,000	20,377,000
Full recourse	23,994,000	28,875,000
Total current liabilities	225,994,000	186,339,000
Limited and non-recourse (all related to VIEs):
Senior secured notes	241,146,000	270,310,000
Other loans	300,429,000	311,078,000
Full recourse:
Senior unsecured bonds (plus unamortized premium based upon 7% of $975)	250,443,000	250,596,000
Other loans	43,940,000	53,467,000
Revolving credit lines with banks	82,000,000	112,017,000
Liability associated with sale of tax benefits	50,829,000	60,985,000
Deferred lease income	62,029,000	63,496,000
Deferred income taxes	63,884,000	55,035,000
Liability for unrecognized tax benefits	5,589,000	4,950,000
Liabilities for severance pay	23,794,000	23,841,000
Asset retirement obligation	19,422,000	18,679,000
Other long-term liabilities	4,830,000	3,529,000
Total liabilities	1,374,329,000	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; 45,518,847 and 45,460,653 shares issued and outstanding as of June 30, 2014 and December 31, 2013, respectively	46,000	46,000
Additional paid-in capital	738,842,000	735,295,000
Retained earnings (accumulated deficit)	22,597,000	(3,088,000)
Accumulated other comprehensive income (loss)	(3,673,000)	487,000
	757,812,000	732,740,000
Noncontrolling interest	12,788,000	12,371,000
Total equity	770,600,000	745,111,000
Total liabilities and equity	2,144,929,000	2,159,433,000
Variable Interest Entity, Primary Beneficiary [Member]
Receivables:
Property, plant and equipment, net ($1,399,678 and $1,381,083 related to VIEs, respectively)	1,399,678,000	1,381,083,000
Construction-in-process ($55,181 and $136,947 related to VIEs, respectively)	$ 55,181,000	$ 136,947,000