Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies - Comprehensive income, new pronouncements (Details)

v3.20.1
Significant Accounting Policies - Comprehensive income, new pronouncements (Details) - USD ($)
Jan. 01, 2019
Dec. 31, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Lease, Practical Expedients, Package [true false] true    
Accumulated other comprehensive loss   $ 0  
Operating Lease, Right-of-Use Asset   1,196,000 $ 0
Operating Lease, Liability   $ 2,100,000  
Accounting Standards Update 2016-02 | Restatement Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating Lease, Right-of-Use Asset $ 1,200,000    
Operating Lease, Liability 2,000,000    
Deferred Rent Credit $ 700,000