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CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Common Stock, No Par Value; Shares Authorized- 40,000; Shares Outstanding- 2011- 15,682, 2010- 15,566	$ 141,432	$ 139,534
Retained Earnings	35,549	33,745
TOTAL COMMON EQUITY	176,981	173,279
TOTAL PREFERRED STOCK	3,353	3,362
Long-term Debt:
8.05%, Amortizing Secured Note, due December 20, 2021	2,319	2,456
6.25%, Amortizing Secured Note, due May 19, 2028	6,895	7,315
6.44%, Amortizing Secured Note, due August 25, 2030	5,227	5,507
6.46%, Amortizing Secured Note, due September 19, 2031	5,507	5,787
4.22%, State Revolving Trust Note, due December 31, 2022	546	585
3.30% to 3.60%, State Revolving Trust Note, due May 1, 2025	3,623	3,655
3.49%, State Revolving Trust Note, due January 25, 2027	633	664
4.03%, State Revolving Trust Note, due December 1, 2026	825	865
4.00% to 5.00%, State Revolving Trust Bond, due August 1, 2021	434	522
0.00%, State Revolving Fund Bond, due August 1, 2021	359	397
3.64%, State Revolving Trust Note, due July 1, 2028	364	387
3.64%, State Revolving Trust Note, due January 1, 2028	122	130
3.45%, State Revolving Trust Note, due August 1, 2031	39	17
6.59%, Amortizing Secured Note, due April 20, 2029	6,046	6,395
7.05%, Amortizing Secured Note, due January 20, 2030	4,521	4,771
5.69%, Amortizing Secured Note, due January 20, 2030	9,273	9,786
3.75%, State Revolving Trust Note, due July 1, 2031	2,021
3.75%, State Revolving Trust Note, due November 30, 2030	1,404
First Mortgage Bonds:
5.20%, Series S, due October 1, 2022	12,000	12,000
5.25%, Series T, due October 1, 2023	6,500	6,500
5.25%, Series V, due February 1, 2029	10,000	10,000
5.35%, Series W, due February 1, 2038	23,000	23,000
0.00%, Series X, due September 1, 2018	375	430
4.25% to 4.63%, Series Y, due September 1, 2018	410	590
0.00%, Series Z, due September 1, 2019	894	1,007
5.25% to 5.75%, Series AA, due September 1, 2019	1,080	1,440
0.00%, Series BB, due September 1, 2021	1,206	1,328
4.00% to 5.00%, Series CC, due September 1, 2021	1,400	1,680
5.10%, Series DD, due January 1, 2032	6,000	6,000
0.00%, Series EE, due August 1, 2023	4,804	5,224
3.00% to 5.50%, Series FF, due August 1, 2024	6,160	6,555
0.00%, Series GG, due August 1, 2026	1,352	1,440
4.00% to 5.00%, Series HH, due August 1, 2026	1,640	1,715
0.00%, Series II, due August 1, 2024	1,150	1,239
3.40% to 5.00%, Series JJ, due August 1, 2027	1,560	1,625
0.00%, Series KK, due August 1, 2028	1,526	1,616
5.00% to 5.50%, Series LL, due August 1, 2028	1,635	1,695
0.00%, Series MM, due August 1, 2030	1,901	1,968
3.00% to 4.375%, Series NN, due August 1, 2030	1,985	1,985
SUBTOTAL LONG-TERM DEBT	136,736	138,276
Less: Current Portion of Long-term Debt	(4,569)	(4,432)
TOTAL LONG-TERM DEBT	132,167	133,844
Cumulative Preferred Stock
TOTAL PREFERRED STOCK
Convertible Preferred Stock $7.00 Series
TOTAL PREFERRED STOCK	1,457	1,457
Convertible Preferred Stock $8.00 Series
TOTAL PREFERRED STOCK	816	816
Nonredeemable Preferred Stock $7.00 Series
TOTAL PREFERRED STOCK	80	89
Nonredeemable Preferred Stock $4.75 Series
TOTAL PREFERRED STOCK	$ 1,000	$ 1,000

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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No definition available.

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- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 16



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

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- Details

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- Definition

Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 02

-Paragraph 29



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.31(a)(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 31

-Article 5



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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