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Summary Of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2015
Summary Of Significant Accounting Policies [Abstract]  
Rollforward Analysis of the Allowance Against Accounts Receivable Balance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Year Ended December 31,

Allowances for bad debts

 

2015

 

2014

 

2013

 

 

(in thousands)

Balance at January 1

 

$

 (10,031)

 

$

 (7,631)

 

$

 (6,069)

Charged to costs and expenses

 

 

 (2,699)

 

 

 (2,400)

 

 

 (1,562)

Foreign currency gain

 

 

 880 

 

 

 -

 

 

 -

Balance at December 31

 

$

 (11,850)

 

$

 (10,031)

 

$

 (7,631)