Leases (Details) $ in Thousands		3 Months Ended	6 Months Ended
		Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($) Squarefeet	Dec. 31, 2018 USD ($)
Lessee, Operating Lease, Description [Abstract]
Sublease square feet | Squarefeet			3,822
Sublease date			Apr. 01, 2017
Leased Assets [Abstract]
Operating lease - right of use assets		$ 4,071	$ 4,071	$ 0
Lease Liabilities [Abstract]
Operating lease liabilities - Current		1,078	1,078
Operating lease liabilities - Noncurrent		3,439	3,439	$ 0
Operating lease liability		4,517	4,517
Consolidated Statement of Operations Information [Abstract]
Operating lease cost	[1]	317	545
Short-term leases costs	[2]	35	73
Sublease income	[3]	(16)	(32)
Net lease cost		336	586
Minimum Lease Payments [Abstract]
2019		654	654
2020		1,246	1,246
2021		1,216	1,216
2022		1,156	1,156
2023		622	622
After 2023		107	107
Total lease payments		5,001	5,001
Less: Interest		484	484
Operating lease liability		$ 4,517	$ 4,517
Lease Term and Discount Rate [Abstract]
Weighted-average remaining lease term (in years)			4 years 2 months 19 days
Weighted-average discount rate		5.00%	5.00%
Other Information [Abstract]
Operating cash flows used in operating leases			$ 567
Cash paid for amounts included in measurement of liabilities			567
Right-of-use assets obtained in exchange for new operating liabilities			$ 1,777
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] Include leases maturity less than twelve months from the report date.

[3] Sublease portfolio consists of the sublease part of our principal executive office located at 1332 Londontown Blvd, Suite 200, Sykesville, MD.