Leases (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Weighted Average Remaining Lease Term [Abstract]
Operating leases	2 years 9 months 18 days				2 years 9 months 18 days
Finance leases	8 years 7 months 6 days				8 years 7 months 6 days
Weighted Average Discount Rate [Abstract]
Operating leases	5.75%				5.75%
Finance leases	5.04%				5.04%
Operating Leases, Right-of-Use Assets and Lease Liabilities [Abstract]
Right-of-use asset	$ 1,622				$ 1,622		$ 1,979
Operating lease liabilities, non-current	1,101				1,101		$ 1,553
Future Minimum Lease Commitments [Abstract]
2020 (excluding the six months ended June 30, 2020)	194				194
2021	752				752
2022	592				592
2023	373				373
2024	27				27
After 2024	0				0
Total lease payments	1,938				1,938
Less imputed interest	(151)				(151)
Total	1,787				1,787
Finance Lease Liabilities, Payments, Due [Abstract]
2019 (excluding the six months ended June 30, 2019)	517				517
2021	2,097				2,097
2022	2,149				2,149
2023	2,203				2,203
2024	2,258				2,258
2024 and thereafter	10,658				10,658
Total lease payments	19,882				19,882
Less imputed interest	(3,924)				(3,924)
Total	15,958				15,958
Lease, Cost [Abstract]
Operating lease cost	182		$ 160		542	$ 454
Short-term lease cost	26	[1]	42	[1]	83	126
Amortization of finance lease assets	305		305		915	915
Interest on finance lease liabilities	205		219		622	666
Total finance lease cost	510		524		1,537	1,581
Total lease costs	$ 718		$ 726		2,162	2,161
Cash paid for amounts included in the measurement of lease liabilities: [Abstract]
Cash flows from operating activities - operating leases					552	435
Cash flows from operating activities - finance leases					622	665
Cash flows from financing activities - finance leases					907	826
Right-of-use assets obtained in exchange for lease obligations: [Abstract]
Operating lease right-of-use assets obtained in exchange for operating lease liabilities					$ 455	$ 378

[1] Leases that have terms of 12 months or less.