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Other (Tables)
 6 Months Ended
Jun. 30, 2012
Other [Abstract]  
Schedule of Allowance for Funds Used During Construction
The following table presents the Company’s AFUDC amounts:
 
Three Months Ended June 30,
Six Months Ended June 30,
(Dollars in Thousands)
2012
2011
2012
2011
Equity AFUDC
$
5,179

$
8,299

$
14,485

$
12,033

Washington Commission AFUDC
178

365

319

4,271

Total in other income
5,357

8,664

14,804

16,304

Debt AFUDC
4,687

7,597

11,982

12,001

Total AFUDC
$
10,044

$
16,261

$
26,786

$
28,305