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Schedule II - Valuation and Qualifying Accounts (Consolidated)
 12 Months Ended
Dec. 31, 2011
Schedule II - Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure
Schedule II -- Valuation and Qualifying Accounts (Consolidated)
Years ended December 31, 2011, 2010, and 2009


(dollars in thousands)
 
Allowance for Doubtful Accounts
 
Allowance for Slow Moving and Obsolete Inventory
 
Valuation Allowance for Deferred Tax Asset
 
 
 
Balance at December 31, 2008
 
$
10,479

 
$
6,582

 
$
87,442

Charged to expense or other accounts
 
2,049

 
1,431

 
11,547

Deductions
 
(5,071
)
 
(3,485
)
 
—

Balance at December 31, 2009
 
7,457

 
4,528

 
98,989

Charged to expense or other accounts
 
457

 
1,774

 
(26,662
)
Deductions
 
(2,396
)
 
(1,644
)
 
—

Balance at December 31, 2010
 
5,518

 
4,658

 
72,327

Charged to expense or other accounts
 
367

 
392

 
7,280

Deductions
 
(578
)
 
(242
)
 
—

Balance at December 31, 2011
 
$
5,307

 
$
4,808

 
$
79,607