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CONDENSED CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Unaudited) (USD $)
In Thousands
Sep. 30, 2011
Dec. 31, 2010
Common Stock, No Par Value; Shares Authorized-40,000; Shares Outstanding-2011-15,633, 2010-15,566$ 141,018$ 139,534
Retained Earnings36,45033,745
TOTAL COMMON EQUITY177,468173,279
TOTAL PREFERRED STOCK3,3533,362
Long-term Debt:  
8.05%, Amortizing Secured Note, due December 20, 20212,3542,456
6.25%, Amortizing Secured Note, due May 19, 20287,0007,315
6.44%, Amortizing Secured Note, due August 25, 20305,2975,507
6.46%, Amortizing Secured Note, due September 19, 20315,5775,787
4.22%, State Revolving Trust Note, due December 31, 2022566585
3.30% to 3.60%, State Revolving Trust Note, due May 1, 20253,6233,655
3.49%, State Revolving Trust Note, due January 25, 2027633664
4.03%, State Revolving Trust Note, due December 1, 2026846865
4.00% to 5.00%, State Revolving Trust Bond, due August 1, 2021484522
0.00%, State Revolving Fund Bond, due August 1, 2021359397
3.64%, State Revolving Trust Note, due July 1, 2028372387
3.64%, State Revolving Trust Note, due January 1, 2028124130
6.59%, Amortizing Secured Note, due April 20, 20296,1336,395
7.05%, Amortizing Secured Note, due January 20, 20304,5834,771
5.69%, Amortizing Secured Note, due January 20, 20309,4029,786
3.45%, State Revolving Trust Note, due August 1, 20313317
3.75%, State Revolving Trust Note, due July 1, 20311,327 
3.75%, State Revolving Trust Note, due November 30, 20301,404 
First Mortgage Bonds:  
5.20%, Series S, due October 1, 202212,00012,000
5.25%, Series T, due October 1, 20236,5006,500
5.25%, Series V, due February 1, 202910,00010,000
5.35%, Series W, due February 1, 203823,00023,000
0.00%, Series X, due September 1, 2018375430
4.25% to 4.63%, Series Y, due September 1, 2018525590
0.00%, Series Z, due September 1, 20198941,007
5.25% to 5.75%, Series AA, due September 1, 20191,3151,440
0.00%, Series BB, due September 1, 20211,2061,328
4.00% to 5.00%, Series CC, due September 1, 20211,5601,680
5.10%, Series DD, due January 1, 20326,0006,000
0.00%, Series EE, due August 1, 20234,8045,224
3.00% to 5.50%, Series FF, due August 1, 20246,1606,555
0.00%, Series GG, due August 1, 20261,3521,440
4.00% to 5.00%, Series HH, due August 1, 20261,6401,715
0.00%, Series II, due August 1, 20241,1501,239
3.40% to 5.00%, Series JJ, due August 1, 20271,5601,625
0.00%, Series KK, due August 1, 20281,5261,616
5.00% to 5.50%, Series LL, due August 1, 20281,6351,695
0.00%, Series MM, due August 1, 20301,9011,968
3.00% to 4.375%, Series NN, due August 1, 20301,9851,985
SUBTOTAL LONG-TERM DEBT137,205138,276
Less: Current Portion of Long-term Debt(4,564)(4,432)
TOTAL LONG-TERM DEBT132,641133,844
Cumulative Preferred Stock
  
TOTAL PREFERRED STOCK  
Convertible Preferred Stock $7.00 Series
  
TOTAL PREFERRED STOCK1,4571,457
Convertible Preferred Stock $8.00 Series
  
TOTAL PREFERRED STOCK816816
Nonredeemable Preferred Stock $7.00 Series
  
TOTAL PREFERRED STOCK8089
Nonredeemable Preferred Stock $4.75 Series
  
TOTAL PREFERRED STOCK$ 1,000$ 1,000