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Bank Debt (Tables)
 12 Months Ended
Dec. 31, 2012
Bank Debt  
Schedule of short-term borrowing activities (excluding letters of credit)

 

 

 

 

December 31,

 

(in thousands, except percent)

 

2012

 

2011

 

2010

 

Balance Outstanding at December 31,

 

$

—

 

$

2,000

 

$

60,900

 

Interest Rate at December 31,

 

1.41

%

1.51

%

1.47

%

Average Amount Outstanding

 

$

885

 

$

25,713

 

$

37,623

 

Weighted Average Annual Interest Rate

 

1.49

%

1.46

%

1.40

%

Maximum Amount Outstanding

 

$

6,000

 

$

64,900

 

$

63,900