Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Deferred Charges - Narrative (Details)

v3.21.2
Intangible Assets and Deferred Charges - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jan. 15, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]          
Deferred charges, estimated useful life       4 years  
Loss on extinguishment of debt   $ 0 $ 0 $ 223 $ 0
Line of Credit | $150 million revolving line of credit, due January 15, 2025 | Revolving Credit Facility          
Finite-Lived Intangible Assets [Line Items]          
Debt term 4 years        
Loss on extinguishment of debt       $ 200  
Minimum          
Finite-Lived Intangible Assets [Line Items]          
Estimated useful life       8 years  
Maximum          
Finite-Lived Intangible Assets [Line Items]          
Estimated useful life       15 years