Summary of Significant Accounting Policies - Leases (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Summary of Significant Accounting Policies
Right of use asset and lease liability measured at commencement of the lease	$ 2,180	$ 2,778	$ 1,048
Operating leases, Right-of-use assets	$ 2,491	$ 2,491		$ 2,785
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating leases, Lease liabilities	$ 2,597	$ 2,597		$ 2,813
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Finance leases, Right of use assets	$ 2,172	$ 2,172
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Finance Lease, Lease liabilities	$ 2,185	$ 2,185
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Long-term Borrowings	Long-term Borrowings