Revisions of Previously - Issued Financial Statements (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Foreign currency matters | Total Assets
Increase (Decrease), Reclassified as Correction	$ 0
Foreign currency matters | Total Liability
Increase (Decrease), Reclassified as Correction	0
Foreign currency matters | Total Equity
Increase (Decrease), Reclassified as Correction	0
Derivative instrument reclassification | Total Assets
Increase (Decrease), Reclassified as Correction	0
Derivative instrument reclassification | Total Liability
Increase (Decrease), Reclassified as Correction	0
Derivative instrument reclassification | Total Equity
Increase (Decrease), Reclassified as Correction	0
Deferred income tax | Total Assets
Increase (Decrease), Reclassified as Correction	(3,240)
Deferred income tax | Total Liability
Increase (Decrease), Reclassified as Correction	(3,666)
Deferred income tax | Total Equity
Increase (Decrease), Reclassified as Correction	426
Other | Total Assets
Increase (Decrease), Reclassified as Correction	0
Other | Total Liability
Increase (Decrease), Reclassified as Correction	0
Other | Total Equity
Increase (Decrease), Reclassified as Correction	$ 0