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Fair Values of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
The following table provides a summary of the company’s assets and liabilities that are measured on a recurring basis (in thousands).
 
 
 
Basis for Fair Value Measurements at Reporting Date
 
 
Quoted Prices
in Active
Markets
for Identical
Assets /
(Liabilities)
 
Significant
Other
Observable
Inputs
 
Significant
Other
Unobservable
Inputs
Total
 
Level I
 
Level II
 
Level III
December 31, 2012:
 
 
 
 
 
 
 
Forward Exchange Contracts—net
$
5

 
—

 
$
5

 
—

Interest Rate Swap Agreements—net
(316
)
 
—

 
(316
)
 
—

December 31, 2011:
 
 
 
 
 
 
 
Forward Exchange Contracts—net
$
1,180

 
—

 
$
1,180

 
—

Interest Rate Swap Agreements—net
(370
)
 
—

 
(370
)
 
—
Fair Value, by Balance Sheet Grouping [Table Text Block]
The carrying amounts and fair values of the company’s financial instruments at December 31, 2012 and 2011 are as follows (in thousands):
 
2012
 
2011
 
Carrying
Value
 
Fair Value
 
Carrying
Value
 
Fair Value
Cash and cash equivalents
$
38,791

 
$
38,791

 
$
34,924

 
$
34,924

Other investments
1,171

 
1,171

 
1,362

 
1,362

Installment receivables, net of reserves
2,594

 
2,594

 
7,477

 
7,477

Long-term debt (including current maturities of long-term debt)
(234,802
)
 
(234,072
)
 
(265,484
)
 
(264,112
)
Forward contracts in Other Current Assets
1,062

 
1,062

 
1,685

 
1,685

Forward contracts in Accrued Expenses
(1,057
)
 
(1,057
)
 
(505
)
 
(505
)
Interest rate swap agreements in Other Current Assets
—

 
—

 
18

 
18

Interest rate swap agreements in Accrued Expenses
(316
)
 
(316
)
 
(388
)
 
(388
)