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Operating Leases (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Payments [Abstract]      
2015 $ 1,970,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent    
2016 1,411,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears    
2017 1,270,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears    
2018 862,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears    
2019 356,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears    
Thereafter 2,781,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter    
Total 8,650,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue    
Receipts [Abstract]      
2015 577,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent    
2016 339,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears    
2017 210,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears    
2018 78,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears    
2019 4,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears    
Thereafter 0us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter    
Total 1,208,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable    
Rental expense net of rental income under operating leases $ 1,300,000us-gaap_OperatingLeasesRentExpenseNet $ 1,200,000us-gaap_OperatingLeasesRentExpenseNet $ 800,000us-gaap_OperatingLeasesRentExpenseNet