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Long-Term Debt and Credit Facility (Maturities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Term Loan    
2015 $ 18,643us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths  
2016 7,143us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo  
2017 7,143us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree  
2018 11,112us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour  
Long-term debt 44,041us-gaap_LongTermDebt 62,105us-gaap_LongTermDebt
Revolving Credit Facility [Member]    
Term Loan    
2015 8,500us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
 
2016 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
 
2017 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
 
2018 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
 
Long-term debt 8,500us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
16,272us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
Term loan [Member]    
Term Loan    
2015 10,143us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
 
2016 7,143us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
 
2017 7,143us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
 
2018 11,112us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
 
Long-term debt $ 35,541us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
$ 45,833us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember