Leases (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020		Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 139	[1]	$ 145	[2]	$ 381	[1]	$ 454	[2]
Finance lease cost:
Amortization of leased assets	164		153		467		471
Interest on lease liabilities	3		8		15		26
Total finance lease cost	$ 167		$ 161		$ 482		$ 497

[1] Includes short term lease costs of $30,000 and $81,000 for the three and nine months ended September 30, 2020, respectively.

[2] Includes short term lease costs of $27,000 and $93,000 for the three and nine months ended September 30, 2019, respectively.