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Long-Term Debt, Interest Rate Swap and Capitalized Lease Obligations - Scheduled Payments of Capital Lease Obligations (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Debt Disclosure [Abstract]  
2019 $ 500
2020 202
2021 189
2022 131
Total 1,022
Amounts related to interest (94)
Principal payments on capitalized lease obligation $ 928