Leases (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020		Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 123	[1]	$ 153	[2]	$ 242	[1]	$ 309	[2]
Finance lease cost:
Amortization of leased assets	152		157		303		318
Interest on lease liabilities	5		8		12		18
Total finance lease cost	$ 157		$ 165		$ 315		$ 336

[1] Includes short term lease costs of $27,000 and $51,000 for the three and six months ended June 30, 2020, respectively.

[2] Includes short term lease costs of $32,000 and $66,000 for the three and six months ended June 30, 2019, respectively.