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Leases (Details Narrative)
$ in Thousands
Dec. 31, 2017
USD ($)
Leases [Abstract]  
Minimum future straight-lined rentals due on noncancelable leases 2018 $ 33,347
Minimum future straight-lined rentals due on noncancelable leases 2019 26,118
Minimum future straight-lined rentals due on noncancelable leases 2020 21,938
Minimum future straight-lined rentals due on noncancelable leases 2021 18,400
Minimum future straight-lined rentals due on noncancelable leases 2022 15,058
Minimum future straight-lined rentals due on noncancelable leases 2023 and subsequent years $ 56,149