Leases (Details-1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lease Cost [Abstract]
Amortization of leased assets, Depreciation and amortization	$ 1,694	$ 1,524
Interest on lease liabilities, Interest expense, net	784	792
Operating lease expense, Other operations and maintenance	319	144
Total lease expense	$ 2,797	$ 2,460