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Schedule II, Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2012
Schedule II, Valuation and Qualifying Accounts [Abstract]  
Schedule II, Valuation and Qualifying Accounts
SCHEDULE II

NSP-WISCONSIN AND SUBSIDIARIES
VALUATION AND QUALIFYING ACCOUNTS
YEARS ENDED DEC. 31, 2012, 2011 AND 2010
(amounts in thousands)
 
 
 
 
 
Additions
 
 
 
 
 
 
 
 
Balance at
Jan. 1
 
 
Charged to
Costs and
Expenses
 
 
Charged to
Other
Accounts (a)
 
 
Deductions
from
Reserves (b)
 
 
Balance at
Dec. 31
 
Allowance for bad debts:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2012
 
$
4,766
 
 
$
3,329
 
 
$
1,310
 
 
$
5,072
 
 
$
4,333
 
2011
 
 
4,262
 
 
 
3,842
 
 
 
1,241
 
 
 
4,579
 
 
 
4,766
 
2010
 
 
4,709
 
 
 
3,294
 
 
 
1,207
 
 
$
4,948
 
 
 
4,262
 
 
(a)
Recovery of amounts previously written off.
(b)
Principally bad debts written off or transferred.