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Retirement Plans - Change in Benefit Obligation (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]    
Projected benefit obligation, beginning of year $ 453 $ 337
Service cost 20 16
Interest cost 13 16
Exchange rate movement 20 7
Actuarial (gain)/loss (51) 77
Projected benefit obligation, end of year 455 453
Unfunded status 455 453
Unrecognized loss      
Net amount recognized $ 455 $ 453