Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease assets		$ 2,411
Total operating lease liabilities	$ 1,532	$ 2,887
Renewal term	3 years
Option to renew, extension of lease term	$ 44
Operating lease costs	2,154
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,589