Significant Accounting Policies - Recently Issued and Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Mar. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset		$ 3,158	$ 3,397
Lease liability		$ 3,806
ASU No. 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset	$ 4,300
Lease liability	5,200
Effect on opening retained earnings	$ 0