Consolidated Statements of Financial Position - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Electric Plant
In service	$ 5,824,076	$ 5,802,844
Construction work in progress	184,278	175,567
Total electric plant	6,008,354	5,978,411
Less allowances for depreciation and amortization	(2,435,466)	(2,409,020)
Net electric plant	3,572,888	3,569,391
Other plant	295,022	283,546
Less allowances for depreciation, amortization, and depletion	(107,025)	(105,660)
Net other plant	187,997	177,886
Total property, plant and equipment	3,760,885	3,747,277
Other assets and investments
Investment in other associations	144,632	143,608
Investments in and advances to coal mines	18,292	18,274
Restricted cash and investments	6,066	5,979
Intangible assets, net of accumulated amortization	9,155	10,986
Other noncurrent assets	9,521	9,604
Total other assets and investments	187,666	188,451
Current assets
Cash and cash equivalents	116,617	143,694
Restricted cash and investments	1,308	1,292
Deposits and advances	36,593	27,881
Accounts receivable—Members	94,151	102,035
Other accounts receivable	24,592	16,034
Coal inventory	62,803	46,849
Materials and supplies	90,285	89,459
Total current assets	426,349	427,244
Deferred charges
Regulatory assets	449,204	454,523
Prepayment—NRECA Retirement Security Plan	36,164	37,607
Other	40,836	38,492
Total deferred charges	526,204	530,622
Total assets	4,901,104	4,893,594
Capitalization
Patronage capital equity	1,011,114	1,003,020
Accumulated other comprehensive income (loss)	(389)	(210)
Noncontrolling interest	109,234	111,295
Total equity	1,119,959	1,114,105
Long-term debt	3,082,769	3,120,286
Total capitalization	4,202,728	4,234,391
Current liabilities
Member advances	6,804	8,447
Accounts payable	95,353	117,510
Short-term borrowing	189,335	144,667
Accrued expenses	26,901	32,484
Current asset retirement obligation	2,999	3,087
Accrued interest	34,755	32,852
Accrued property taxes	26,246	27,137
Current maturities of long-term debt	97,929	78,004
Total current liabilities	480,322	444,188
Deferred credits and other liabilities
Regulatory liabilities	85,815	81,824
Deferred income tax liability	17,205	17,205
Asset retirement obligations	53,817	53,768
Other	52,275	53,396
Total deferred credits and other liabilities	209,112	206,193
Accumulated postretirement benefit and postemployment obligations	8,942	8,822
Total equity and liabilities	$ 4,901,104	$ 4,893,594