Leases (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) ft² Tenant	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Leased Assets [Abstract]
Operating lease - right of use assets		$ 1,279		$ 1,279		$ 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		$ 1,099		$ 1,099		$ 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		$ 1,315		$ 1,315		$ 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		$ 2,414		$ 2,414		$ 2,969
Sublease Agreement [Abstract]
Sublease square feet | ft²				3,650
Sublease date				May 01, 2019
Previously subleased square feet | ft²				3,822
Previous sublease date				Apr. 01, 2017
Number of tenants | Tenant				2
Consolidated Statement of Operations Information [Abstract]
Operating lease cost	[1]	177	$ 321	$ 369	$ 418
Short-term leases costs	[2]	14	1	30	1
Sublease income	[3]	(32)	(32)	(64)	(64)
Net lease cost		159	$ 290	335	355
Minimum Lease Payments [Abstract]
2021 remainder		613		613
2022		1,171		1,171
2023		638		638
2024		122		122
2025		10		10
Thereafter		3		3
Total lease payments		2,557		2,557
Less: Interest		143		143
Present value of lease payments		$ 2,414		$ 2,414		$ 2,969
Lease Term and Discount Rate [Abstract]
Weighted-average remaining lease term (in years)		2 years 2 months 26 days		2 years 2 months 26 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				$ 639	$ 675
Minimum [Member]
Lessee, Operating Lease, Description [Abstract]
Remaining operating lease terms		1 year		1 year
Renewal option period		1 year		1 year
Maximum [Member]
Lessee, Operating Lease, Description [Abstract]
Remaining operating lease terms		6 years		6 years
Renewal option period		5 years		5 years

[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 two tenants, which sublease parts of our principal executive office located at 1332 Londontown Blvd, Suite 200, Sykesville, MD.