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Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt
(Expressed in thousands)   
IssuedMaturity DateDecember 31, 2020December 31, 2019
5.50% Senior Secured Notes10/1/2025$125,000 $— 
6.75% Senior Secured Notes7/1/2022— 150,000 
Unamortized Debt Issuance Cost(1,154)(485)
$123,846 $149,515