Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating Revenues
Member electric sales	$ 275,517	$ 257,292	$ 547,286	$ 524,831
Non-member electric sales	26,666	29,785	56,788	64,848
Other	20,051	18,836	41,622	44,625
Total revenues	322,234	305,913	645,696	634,304
Operating expenses
Purchased power	78,170	71,284	149,205	144,421
Fuel	51,560	35,569	112,550	96,844
Production	57,016	70,377	107,998	123,897
Transmission	39,132	37,972	75,592	75,071
General and administrative	6,392	5,472	11,502	11,623
Depreciation, amortization and depletion	41,873	35,968	80,776	70,946
Coal mining	7,398	7,116	15,671	15,943
Other	3,690	3,605	9,020	7,625
Operating expenses	285,231	267,363	562,314	546,370
Operating margins	37,003	38,550	83,382	87,934
Other income
Interest Income	1,059	1,087	2,133	2,170
Capital credits from cooperatives	184	947	4,695	5,241
Other income	694	503	1,735	1,851
Total other income	1,937	2,537	8,563	9,262
Interest expense, net of amounts capitalized	35,924	34,910	71,344	71,073
Income taxes	350	0	350	0
Net margins including noncontrolling interest	2,666	6,177	20,251	26,123
Net (income) loss attributable to noncontrolling interest	(129)	107	(181)	287
Net margins attributable to the Association	$ 2,537	$ 6,284	$ 20,070	$ 26,410