Significant Accounting Policies - Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liabilities for operating leases	$ 6,007
Restatement Adjustment | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of use assets for operating leases		$ 6,900
Lease liabilities for operating leases		$ 6,900