Credit Facilities and Long-Term Debt, Deferred Financing Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortization for Future Years [Abstract]
2020	$ 225
2021	225
2022	225
2023	206
Total amortization	881	$ 1,100
JPMorgan Chase Bank Credit Facility [Member]
Amortization for Future Years [Abstract]
Total amortization	$ 500