Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 207,967	$ 82,574
Accounts and notes receivable-less allowances of $4,626 and $44,309, respectively	127,614	221,343
Utility energy commodity derivative assets	10,869	3,022
Regulatory asset for utility derivatives	0	10,829
Investments and funds held for clients	0	96,688
Materials and supplies, fuel stock and natural gas stored	49,437	44,946
Deferred income taxes	8,266	24,788
Income taxes receivable	0	7,783
Other current assets	38,114	57,706
Total current assets	442,267	549,679
Net Utility Property:
Utility plant in service	4,385,131	4,290,464
Construction work in progress	191,611	160,323
Total	4,576,742	4,450,787
Less: Accumulated depreciation and amortization	1,294,679	1,248,362
Total net utility property	3,282,063	3,202,425
Other Non-current Assets:
Investment in exchange power-net	12,658	13,883
Investment in affiliated trusts	11,547	11,547
Goodwill	5,246	76,257
Intangible assets-net of accumulated amortization of $0 and $36,634, respectively	0	39,576
Long-term energy contract receivable of Spokane Energy	34,541	40,619
Other property and investments-net	36,028	58,555
Total other non-current assets	100,020	240,437
Deferred Charges:
Regulatory assets for deferred income tax	66,555	71,421
Regulatory assets for pensions and other postretirement benefits	153,426	156,984
Other regulatory assets	114,253	102,915
Non-current utility energy commodity derivative assets	275	854
Non-current regulatory asset for utility derivatives	13,304	23,258
Other deferred charges	29,967	13,950
Total deferred charges	377,780	369,382
Total assets	4,202,130	4,361,923
Current Liabilities:
Accounts payable	73,349	182,088
Client fund obligations	0	99,117
Current portion of long-term debt	4,348	358
Current portion of nonrecourse long-term debt of Spokane Energy	9,812	16,407
Short-term borrowings	151,500	171,000
Utility energy commodity derivative liabilities	3,378	10,875
Taxes Payable, Current	98,314	697
Other current liabilities	123,630	144,798
Total current liabilities	464,331	625,340
Long-term debt	1,268,530	1,272,425
Nonrecourse long-term debt of Spokane Energy	0	1,431
Long-term debt to affiliated trusts	51,547	51,547
Long-term borrowings under committed line of credit	0	46,000
Regulatory liability for utility plant retirement costs	248,129	242,850
Pensions and other postretirement benefits	103,421	122,513
Deferred income taxes	542,090	535,343
Other non-current liabilities and deferred credits	114,537	130,318
Total liabilities	2,792,585	3,027,767
Commitments and Contingencies (See Notes to Consolidated Financial Statements)
Redeemable Noncontrolling Interests	0	15,889
Avista Corporation Stockholders’ Equity:
Common stock, no par value; 200,000,000 shares authorized; 60,220,099 and 60,076,752 shares outstanding, respectively	885,741	896,993
Accumulated other comprehensive loss	(4,010)	(5,819)
Retained earnings	528,285	407,092
Total Avista Corporation stockholders’ equity	1,410,016	1,298,266
Noncontrolling Interests	(471)	20,001
Total equity	1,409,545	1,318,267
Total liabilities and equity	$ 4,202,130	$ 4,361,923