Consolidated Statements of Financial Position - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Electric Plant
In service	$ 5,797,376	$ 5,682,613
Construction work in progress	218,016	212,081
Total electric plant	6,015,392	5,894,694
Less allowances for depreciation and amortization	(2,452,684)	(2,361,555)
Net electric plant	3,562,708	3,533,139
Other plant	259,360	234,457
Less allowances for depreciation, amortization, and depletion	(102,944)	(89,809)
Net other plant	156,416	144,648
Total property, plant and equipment	3,719,124	3,677,787
Other assets and investments
Investment in other associations	141,101	139,350
Investments in and advances to coal mines	18,257	18,176
Restricted cash and investments	3,219	1,000
Intangible assets, net of accumulated amortization	12,817	18,310
Other noncurrent assets	12,074	11,542
Total other assets and investments	187,468	188,378
Current assets
Cash and cash equivalents	129,638	165,893
Restricted cash and investments	1,226	997
Deposits and advances	34,599	25,141
Accounts receivable—Members	102,931	97,925
Other accounts receivable	22,704	24,837
Coal inventory	48,256	63,945
Materials and supplies	87,945	87,768
Total current assets	427,299	466,506
Deferred charges
Regulatory assets	473,158	395,615
Prepayment—NRECA Retirement Security Plan	39,049	43,627
Other	45,144	139,378
Total deferred charges	557,351	578,620
Total assets	4,891,242	4,911,291
Capitalization
Patronage capital equity	1,030,479	961,364
Accumulated other comprehensive income (loss)	(251)	(286)
Noncontrolling interest	110,556	109,147
Total equity	1,140,784	1,070,225
Long-term debt	3,065,760	3,139,705
Total capitalization	4,206,544	4,209,930
Current liabilities
Member advances	7,940	11,363
Accounts payable	96,855	105,511
Short-term borrowing	175,082	119,901
Accrued expenses	27,648	32,719
Accrued interest	50,660	34,166
Accrued property taxes	25,118	27,584
Current maturities of long-term debt	78,679	107,903
Total current liabilities	461,982	439,147
Deferred credits and other liabilities
Regulatory liabilities	72,428	95,512
Deferred income tax liability	30,522	30,517
Intangible liabilities	922	3,263
Asset retirement obligations	56,773	58,583
Other	53,645	66,164
Total deferred credits and other liabilities	214,290	254,039
Accumulated postretirement benefit and postemployment obligations	8,426	8,175
Total equity and liabilities	$ 4,891,242	$ 4,911,291