Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)		Jun. 30, 2019		Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 110,665,000		$ 98,802,000
Restricted cash and cash equivalents (primarily related to VIEs)		70,974,000		78,693,000
Receivables:
Trade		135,756,000		137,581,000
Other		19,499,000		19,393,000
Inventories		38,880,000		45,024,000
Costs and estimated earnings in excess of billings on uncompleted contracts	[1]	27,352,000		42,130,000
Prepaid expenses and other		9,225,000		51,441,000
Total current assets		412,351,000		473,064,000
Investment in an unconsolidated company		71,047,000		71,983,000
Deposits and other		20,281,000		18,209,000
Deferred income taxes		130,461,000		113,760,000
Property, plant and equipment, net		1,963,086,000		1,959,578,000
Construction-in-process		306,810,000		261,690,000
Operating leases right of use		58,921,000		0
Finance leases right of use		15,469,000		0
Deferred financing and lease costs, net		1,988,000		3,242,000
Intangible assets, net		193,142,000		199,874,000
Goodwill		20,225,000		19,950,000
Total assets		3,193,781,000	[2]	3,121,350,000
Current liabilities:
Accounts payable and accrued expenses		115,011,000		116,362,000
Short term revolving credit lines with banks (full recourse)		53,100,000		159,000,000
Billings in excess of costs and estimated earnings on uncompleted contracts		14,130,000		18,402,000
Current portion of long-term debt:
Senior secured notes		37,343,000		33,493,000
Other loans		34,181,000		29,687,000
Full recourse		9,368,000		5,000,000
Operating lease liabilities		9,906,000		0
Finance lease liabilities		3,555,000		0
Total current liabilities		276,594,000		361,944,000
Long-term debt, net of current portion:
Senior secured notes (less deferred financing costs of $6,869 and $7,434, respectively)		355,151,000		375,337,000
Other loans (less deferred financing costs of $11,018 and $9,354, respectively)		334,384,000		320,242,000
Senior unsecured bonds (less deferred financing costs of $779 and $758, respectively)		353,554,000		303,575,000
Other loans (less deferred financing costs of $1,612 and $921, respectively)		73,336,000		41,579,000
Operating lease liabilities		15,296,000		0
Finance lease liabilities		13,000,000		0
Liability associated with sale of tax benefits		66,999,000		69,893,000
Deferred lease income		44,040,000		48,433,000
Deferred income taxes		79,837,000		61,323,000
Liability for unrecognized tax benefits		14,478,000		11,769,000
Liabilities for severance pay		18,058,000		17,994,000
Asset retirement obligation		43,094,000		39,475,000
Other long-term liabilities		5,499,000		16,087,000
Total liabilities		1,693,320,000		1,667,651,000
Commitments and contingencies (Note 10)
Redeemable noncontrolling interest		8,820,000		8,603,000
Equity:
Common stock, par value $0.001 per share; 200,000,000 shares authorized; 50,862,581 and 50,699,781 shares issued and outstanding as of June 30, 2019 and December 31, 2018, respectively		51,000		51,000
Additional paid-in capital		906,366,000		901,363,000
Retained earnings		470,880,000		422,222,000
Accumulated other comprehensive income (loss)		(7,736,000)		(3,799,000)
Total stockholders' equity attributable to Company's stockholders		1,369,561,000		1,319,837,000
Noncontrolling interest		122,080,000		125,259,000
Total equity		1,491,641,000		1,445,096,000
Total liabilities, redeemable noncontrolling interest and equity		$ 3,193,781,000		$ 3,121,350,000

[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 $20.2 million and $26.7 million as of June 30, 2019 and 2018, respectively. Other segment assets include goodwill in the amount of $13.5 million as of June 30, 2018. No goodwill is included in the Other segments assets as of June 30, 2019.