Derivatives and Hedging - Summary of Fair Value of Derivative Instruments by Contract Type and Location of Asset and/or Liability on Consolidated Condensed Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Other Current Assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset derivatives not designated as hedging instruments, fair value	$ 516	$ 557
Accounts payable and accrued expenses
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, liability derivatives not designated as hedging instruments, fair value	$ 2,130	$ 823