Consolidated Statements of Financial Position - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Electric Plant
In service	$ 5,701,407	$ 5,682,613
Construction work in progress	223,908	212,081
Total electric plant	5,925,315	5,894,694
Less allowances for depreciation and amortization	(2,394,157)	(2,361,555)
Net electric plant	3,531,158	3,533,139
Other plant	234,594	234,457
Less allowances for depreciation, amortization, and depletion	(98,700)	(89,809)
Net other plant	135,894	144,648
Total property, plant and equipment	3,667,052	3,677,787
Other assets and investments
Investment in other associations	140,408	139,350
Investments in and advances to coal mines	18,257	18,176
Restricted cash and investments	1,000	1,000
Intangible assets	16,479	18,310
Other noncurrent assets	11,585	11,542
Total other assets and investments	187,729	188,378
Current assets
Cash and cash equivalents	132,602	165,893
Restricted cash and investments	1,013	997
Deposits and advances	35,486	25,141
Accounts receivable—Members	91,542	97,925
Other accounts receivable	23,135	24,837
Coal inventory	60,551	63,945
Materials and supplies	86,329	87,768
Total current assets	430,658	466,506
Deferred charges
Regulatory assets	390,296	395,615
Prepayment—NRECA Retirement Security Plan	42,247	43,627
Other	144,060	139,378
Total deferred charges	576,603	578,620
Total assets	4,862,042	4,911,291
Capitalization
Patronage capital equity	984,890	961,364
Accumulated other comprehensive income (loss)	(282)	(286)
Noncontrolling interest	109,443	109,147
Total equity	1,094,051	1,070,225
Long-term debt	3,122,002	3,139,705
Total capitalization	4,216,053	4,209,930
Current liabilities
Member advances	6,919	11,363
Accounts payable	93,670	105,511
Short-term borrowing	125,480	119,901
Accrued expenses	29,554	32,719
Accrued interest	50,941	34,166
Accrued property taxes	26,531	27,584
Current maturities of long-term debt	77,101	107,903
Total current liabilities	410,196	439,147
Deferred credits and other liabilities
Regulatory liabilities	87,575	95,512
Deferred income tax liability	30,517	30,517
Intangible liabilities	2,520	3,263
Asset retirement obligations	56,424	58,583
Other	50,499	66,164
Total deferred credits and other liabilities	227,535	254,039
Accumulated postretirement benefit and postemployment obligations	8,258	8,175
Total equity and liabilities	$ 4,862,042	$ 4,911,291