Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Leases
Lease practical expedients package [true false]	true
Lease practical expedient, use of hindsight [true false]	false
Operating lease cost	$ 656
Classification of operating leases
Operating lease right-of-use assets	1,833
Operating lease liability, current	$ 538
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Current
Operating Lease, Liability, Noncurrent	$ 1,574
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent
Lease cost
Operating Lease, Cost	$ 656
Short-term Lease, Cost	223
Total lease cost	$ 879	$ 2,200
Lease Term and Discount Rate
Weighted average remaining lease term	4 years 1 month 6 days
Weighted average discount rate	6.90%
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 719
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$ 393
Minimum
Leases
Initial lease term	1 year
Maximum
Leases
Initial lease term	7 years