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Leases (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Leases [Abstract]      
Lease expense $ 1,324 $ 1,506 $ 1,483
Future lease payments for operating leases with initial or remaining noncancelable term [Abstract]      
2014 164    
2015 144    
2016 138    
2017 106    
2018 0    
Thereafter 0    
Total minimum payments required $ 552