Leases (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) ft² Sublease Tenant	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Leased Assets [Abstract]
Operating lease - right of use assets		$ 1,161		$ 1,161		$ 1,562
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Operating lease - right of use assets		Operating lease - right of use assets		Operating lease - right of use assets
Lease Liabilities [Abstract]
Operating lease liabilities - current		$ 1,085		$ 1,085		$ 1,138
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Other current liabilities		Other current liabilities		Other current liabilities
Operating lease liabilities - Noncurrent		$ 1,036		$ 1,036		$ 1,831
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Operating lease liabilities - Noncurrent		Operating lease liabilities - Noncurrent		Operating lease liabilities - Noncurrent
Operating lease liability		$ 2,121		$ 2,121		$ 2,969
Sublease Agreement [Abstract]
Sublease square feet | ft²				850
Sublease date				Sep. 13, 2021
Number of previous subleases | Sublease				2
Number of tenants | Tenant				3
Consolidated Statement of Operations Information [Abstract]
Operating lease cost	[1]	179	$ 207	$ 548	$ 625
Short-term leases costs	[2]	15	0	45	1
Sublease income	[3]	(32)	(33)	(96)	(97)
Net lease cost		162	$ 174	497	529
Minimum Lease Payments [Abstract]
2021 remainder		291		291
2022		1,171		1,171
2023		638		638
2024		122		122
2025		10		10
Thereafter		3		3
Total lease payments		2,235		2,235
Less: Interest		114		114
Present value of lease payments		$ 2,121		$ 2,121		$ 2,969
Lease Term and Discount Rate [Abstract]
Weighted-average remaining lease term (in years)		2 years 7 days		2 years 7 days		2 years 7 months 20 days
Weighted-average discount rate		5.00%		5.00%		5.00%
Other Information [Abstract]
Operating cash flows used in operating leases				$ 958	$ 1,015
First Sublease [Member]
Sublease Agreement [Abstract]
Previously subleased square feet | ft²				3,822
Previous sublease date				Apr. 01, 2017
Second Sublease [Member]
Sublease Agreement [Abstract]
Previously subleased square feet | ft²				3,650
Previous sublease date				May 01, 2019

[1] Includes variable lease costs which are immaterial.

[2] Includes leases maturing less than twelve months from the report date.

[3] Sublease portfolio consists of three tenants, which sublease parts of our principal executive office located at 1332 Londontown Blvd, Suite 200, Sykesville, MD.