Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017		Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 118,390		$ 230,214
Restricted cash and cash equivalents (primarily related to VIEs)	49,510		34,262
Receivables:
Trade	79,587		80,807
Other	20,128		17,482
Inventories	18,569		12,000
Costs and estimated earnings in excess of billings on uncompleted contracts	59,901		52,198
Prepaid expenses and other	41,151		45,867
Total current assets	387,236		472,830
Investment in an unconsolidated company	13,957
Deposits and other	18,125		18,553
Deferred charges	43,598		43,773
Property, plant and equipment, net ($1,449,920 and $1,483,224 related to VIEs, respectively)	1,526,485		1,556,378
Construction-in-process ($159,612 and $120,853 related to VIEs, respectively)	408,939		306,709
Deferred financing and lease costs, net	5,186		3,923
Intangible assets, net	86,986		52,753
Goodwill	20,121		6,650
Total assets	2,510,633	[1]	2,461,569
Current liabilities:
Accounts payable and accrued expenses	101,827		91,650
Short term revolving credit lines with banks (full recourse)	30,000
Billings in excess of costs and estimated earnings on uncompleted contracts	17,574		31,630
Current portion of long-term debt:
Senior secured notes	32,608		32,234
Other loans	21,495		21,495
Full recourse	10,673		12,242
Total current liabilities	214,177		189,251
Long-term debt, net of current portion:
Senior secured notes (less deferred financing costs of $8,528 and $9,177, respectively)	334,365		350,388
Other loans (less deferred financing costs of $5,957 and $6,409, respectively)	252,085		261,845
Senior unsecured bonds (less deferred financing costs of $654 and $755, respectively)	203,678		203,577
Other loans (less deferred financing costs of $1,206 and $1,346, respectively)	52,742		57,063
Investment in an unconsolidated company in excess of accumulated losses			11,081
Liability associated with sale of tax benefits	48,810		54,662
Deferred lease income	53,036		54,561
Deferred income taxes	44,113		35,382
Liability for unrecognized tax benefits	6,015		5,738
Liabilities for severance pay	21,025		18,600
Asset retirement obligation	24,267		23,348
Other long-term liabilities	22,823		21,294
Total liabilities	1,277,136		1,286,790
Commitments and contingencies (Note 10)
Redeemable noncontrolling interest	5,898		4,772
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 49,910,280 and 49,667,340 shares issued and outstanding as of June 30, 2017 and December 31, 2016, respectively	50		50
Additional paid-in capital	875,591		869,463
Retained earnings	274,566		216,644
Accumulated other comprehensive income (loss)	(6,933)		(7,732)
Total stockholders' equity attributable to Company's stockholders	1,143,274		1,078,425
Noncontrolling interest	84,325		91,582
Total equity	1,227,599		1,170,007
Total liabilities, redeemable noncontrolling interest and equity	$ 2,510,633		$ 2,461,569

[1] Electricity segment assets include goodwill in the amount of $20.1 million