Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Sep. 30, 2019		Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 97,602		$ 98,802
Restricted cash and cash equivalents (primarily related to VIEs)		82,435		78,693
Receivables:
Trade		139,226		137,581
Other		18,482		19,393
Inventories		39,324		45,024
Costs and estimated earnings in excess of billings on uncompleted contracts	[1]	43,125		42,130
Prepaid expenses and other		12,116		51,441
Total current assets		432,310		473,064
Investment in an unconsolidated company		73,714		71,983
Deposits and other		21,078		18,209
Deferred income taxes		131,820		113,760
Property, plant and equipment, net		1,962,637		1,959,578
Construction-in-process		352,013		261,690
Operating leases right of use		58,170		0
Finance leases right of use		18,046		0
Deferred financing and lease costs, net		957		3,242
Intangible assets, net		188,815		199,874
Goodwill		19,933		19,950
Total assets		3,259,493	[2]	3,121,350
Current liabilities:
Accounts payable and accrued expenses		137,176		116,362
Short term revolving credit lines with banks (full recourse)		0		159,000
Commercial paper		50,000		0
Billings in excess of costs and estimated earnings on uncompleted contracts		6,003		18,402
Current portion of long-term debt:
Senior secured notes		39,393		33,493
Other loans		34,135		29,687
Full recourse		76,572		5,000
Operating lease liabilities		6,253		0
Finance lease liabilities		3,191		0
Total current liabilities		352,723		361,944
Long-term debt, net of current portion:
Senior secured notes (less deferred financing costs of $6,597 and $7,434, respectively)		344,924		375,337
Other loans (less deferred financing costs of $10,797 and $9,354, respectively)		326,227		320,242
Senior unsecured bonds (less deferred financing costs of $727 and $758, respectively)		286,401		303,575
Other loans (less deferred financing costs of $1,564 and $921, respectively)		73,384		41,579
Operating lease liabilities		17,698		0
Finance lease liabilities		12,224		0
Liability associated with sale of tax benefits		118,811		69,893
Deferred lease income		43,264		48,433
Deferred income taxes		86,475		61,323
Liability for unrecognized tax benefits		15,053		11,769
Liabilities for severance pay		18,570		17,994
Asset retirement obligation		44,810		39,475
Other long-term liabilities		5,400		16,087
Total liabilities		1,745,964		1,667,651
Commitments and contingencies (Note 10)
Redeemable noncontrolling interest		8,741		8,603
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 50,993,861 and 50,699,781 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively		51		51
Additional paid-in capital		910,651		901,363
Retained earnings		480,879		422,222
Accumulated other comprehensive income (loss)		(10,848)		(3,799)
Total stockholders' equity attributable to Company's stockholders		1,380,733		1,319,837
Noncontrolling interest		124,055		125,259
Total equity		1,504,788		1,445,096
Total liabilities, redeemable noncontrolling interest and equity		$ 3,259,493		$ 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 sheets.

[2] Electricity segment assets include goodwill in the amount of $19.9 million and $26.7 million as of September 30, 2019 and 2018, respectively. Other segment assets include goodwill in the amount of $13.5 million as of September 30, 2018. No goodwill is included in the Other segment assets as of September 30, 2019.