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Other Expenses,Net (Tables)
3 Months Ended
Mar. 31, 2015
Other Expenses, Net [Abstract]  
Schedule of other expenses, net

  Three-Month Periods 
Ended March 31,
 
  2015  2014 
Interest income ($2,982) ($3,954)
Interest expense  13,071   14,962 
Debt issuance amortization  720   719 
Other (gains)  (5,359)  (320)
Other expenses, net $5,450  $11,407