Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Mar. 31, 2019		Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 79,366		$ 98,802
Restricted cash and cash equivalents (primarily related to VIEs)		93,098		78,693
Receivables:
Trade		139,870		137,581
Other		18,319		19,393
Inventories		42,982		45,024
Costs and estimated earnings in excess of billings on uncompleted contracts	[1]	29,762		42,130
Prepaid expenses and other		18,224		51,441
Total current assets		421,621		473,064
Investment in an unconsolidated company		71,885		71,983
Deposits and other		18,154		18,209
Deferred income taxes		109,821		113,760
Property, plant and equipment, net		1,962,580		1,959,578
Construction-in-process		266,083		261,690
Operating leases right of use		60,656
Finance leases right of use		14,433
Deferred financing and lease costs, net		1,733		3,242
Intangible assets, net		196,125		199,874
Goodwill		20,123		19,950
Total assets		3,143,214	[2]	3,121,350
Current liabilities:
Accounts payable and accrued expenses		108,309		116,362
Short term revolving credit lines with banks (full recourse)		60,900		159,000
Billings in excess of costs and estimated earnings on uncompleted contracts		15,508		18,402
Current portion of long-term debt:
Senior secured notes		33,639		33,493
Other loans		29,687		29,687
Full recourse		9,368		5,000
Operating lease liabilities		7,532
Finance lease liabilities		3,147
Total current liabilities		268,090		361,944
Long-term debt, net of current portion:
Senior secured notes (less deferred financing costs of $7,149 and $7,434, respectively)		367,142		375,337
Other loans (less deferred financing costs of $9,262 and $9,354, respectively)		312,779		320,242
Senior unsecured bonds (less deferred financing costs of $706 and $758, respectively)		353,626		303,575
Other loans (less deferred financing costs of $1,483 and $921, respectively)		78,149		41,579
Operating lease liabilities		17,667
Finance lease liabilities		11,954
Liability associated with sale of tax benefits		68,852		69,893
Deferred lease income		47,658		48,433
Deferred income taxes		68,005		61,323
Liability for unrecognized tax benefits		12,482		11,769
Liabilities for severance pay		18,400		17,994
Asset retirement obligation		41,246		39,475
Other long-term liabilities		5,464		16,087
Total liabilities		1,671,514		1,667,651
Commitments and contingencies (Note 10)
Redeemable noncontrolling interest		8,705		8,603
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 50,752,101 and 50,699,781 shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively		51		51
Additional paid-in capital		903,723		901,363
Retained earnings		442,531		422,222
Accumulated other comprehensive income (loss)		(5,956)		(3,799)
Total stockholders' equity attributable to Company's stockholders		1,340,349		1,319,837
Noncontrolling interest		122,646		125,259
Total equity		1,462,995		1,445,096
Total liabilities, redeemable noncontrolling interest and equity		$ 3,143,214		$ 3,121,350

[1] Contract assets and contract liabilities are presented as "Costs and estimated earnings in excess of billings on uncompleted contracts" and "Billings in excess of costs and estimated earnings on uncompleted contracts", respectively, on the consolidated balance sheet.

[2] Electricity segment assets include goodwill in the amount of $20.1 million and $7.8 million as of March 31, 2019 and 2018, respectively. Other segment assets include goodwill in the amount of $13.5 million as of March 31, 2018. No goodwill is included in the Other segments assets as of March 31, 2019.