Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 137,665	$ 40,230
Restricted cash and cash equivalents (all related to VIEs)	104,870	93,248
Receivables:
Trade	58,089	48,609
Related entity		451
Other	14,066	10,141
Due from Parent		1,337
Inventories	16,401	16,930
Costs and estimated earnings in excess of billings on uncompleted contracts	7,093	27,793
Deferred income taxes	267	251
Prepaid expenses and other	31,055	34,884
Total current assets	369,506	273,874
Deposits and other	18,038	20,044
Deferred income taxes	1,694
Deferred charges	36,512	37,567
Property, plant and equipment, net ($1,445,005 and $1,339,342 related to VIEs, respectively)	1,519,945	1,437,637
Construction-in-process ($167,814 and $162,006 related to VIEs, respectively)	277,990	296,722
Deferred financing and lease costs, net	25,836	27,057
Intangible assets, net	27,029	28,655
Total assets	2,276,550	2,121,556
Current liabilities:
Accounts payable and accrued expenses	98,481	88,276
Deferred income taxes	975	974
Short term revolving credit lines with banks (full recourse)		20,300
Billings in excess of costs and estimated earnings on uncompleted contracts	49,731	24,724
Limited and non-recourse (all related to VIEs):
Senior secured notes	32,981	34,368
Other loans	17,995	17,995
Full recourse	17,203	19,116
Total current liabilities	217,366	205,753
Limited and non-recourse (all related to VIEs):
Senior secured notes	320,235	360,366
Other loans	255,627	264,625
Full recourse:
Senior unsecured bonds (plus unamortized premium based upon 7% of $667)	250,136	250,289
Other loans	26,737	34,351
Unconsolidated investments	5,215	3,617
Liability associated with sale of tax benefits	27,298	39,021
Deferred lease income	59,070	60,560
Deferred income taxes	73,887	66,220
Liability for unrecognized tax benefits	7,151	7,511
Liabilities for severance pay	19,424	20,399
Asset retirement obligation	19,894	19,142
Other long-term liabilities	697	2,956
Total liabilities	$ 1,282,737	$ 1,334,810
Commitments and contingencies (Note 10)
The Company's stockholders' equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 49,002,583 and 45,537,162 shares issued and outstanding as of June 30, 2015 and December 31, 2014, respectively	$ 49	$ 46
Additional paid-in capital	845,173	742,006
Retained earnings	59,155	41,539
Accumulated other comprehensive income	(8,519)	(8,668)
	895,858	774,923
Noncontrolling interest	97,955	11,823
Total equity	993,813	786,746
Total liabilities and equity	2,276,550	2,121,556
Variable Interest Entity, Primary Beneficiary [Member]
Receivables:
Property, plant and equipment, net ($1,445,005 and $1,339,342 related to VIEs, respectively)	1,445,005	1,339,342
Construction-in-process ($167,814 and $162,006 related to VIEs, respectively)	$ 167,814	$ 162,006