Operating Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Assets and Liabilities, Lessee [Abstract]
Right-of-use assets	$ 8,308	$ 10,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position	us-gaap:OtherAssets	us-gaap:OtherAssets
Operating lease liabilities	$ 8,915	$ 10,000
Operating Lease, Liability, Statement of Financial Position	us-gaap:OtherLiabilities	us-gaap:OtherLiabilities