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Long-term Debt (Tables)
 6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt
(Expressed in thousands)
 
 
 
 
 
Issued
Maturity Date
 
June 30, 2017
 
December 31, 2016
6.75% Senior Secured Notes
7/1/2022
 
$
200,000

 
$
—

8.75% Senior Secured Notes
4/15/2018
 
—

 
150,000

Unamortized Debt Issuance Cost
 
 
(1,104
)
 
(648
)
 
 
 
$
198,896

 
$
149,352