Leases (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Lease	Sep. 30, 2019 USD ($)	Feb. 28, 2020 USD ($)	Dec. 31, 2019 USD ($)
Leases [Abstract]
Number of leases extended | Lease			1
Right-of-use-asset	$ 3,794		$ 3,794			$ 2,855
Lease liability	3,910		3,910			$ 3,049
Operating lease expense	$ 243	$ 256	735	$ 764
Cash Flows Related to Operating Leases [Abstract]
Operating cash flows from leases			$ 779	$ 772
Operating Lease Weighted Average Remaining Lease Term and Discount Rate [Abstract]
Weighted average remaining lease term	5 years 1 month 6 days		5 years 1 month 6 days			5 years
Weighted average discount rate	4.10%		4.10%			3.70%
Maturity of Operating Lease Liabilities [Abstract]
2020	$ 261		$ 261			$ 1,042
2021	969		969			711
2022	876		876			434
2023	711		711			268
2024	715		715			273
Thereafter	800		800			616
Total undiscounted lease payments	4,332		4,332			3,344
Less imputed interest	422		422			295
Total lease liabilities	$ 3,910		$ 3,910			$ 3,049
Minimum [Member]
Leases [Abstract]
Remaining lease terms	1 year		1 year
Maximum [Member]
Leases [Abstract]
Remaining lease terms	7 years		7 years
Extension period for leases	5 years		5 years
Termination period for leases			1 year
Facility in Ithaca, New York [Member]
Leases [Abstract]
Extension period for leases	4 years		4 years
Right-of-use-asset					$ 1,500
Lease liability					1,500
Maturity of Operating Lease Liabilities [Abstract]
Total lease liabilities					$ 1,500