XML 93 R59.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 7 - Debt, Credit Facilities and Capital Leases (Details Textual)
$ in Thousands, $ in Millions
12 Months Ended
Feb. 20, 2019
USD ($)
Jul. 31, 2018
USD ($)
Apr. 12, 2013
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2014
USD ($)
Jan. 01, 2020
Jul. 20, 2018
USD ($)
Mar. 05, 2018
USD ($)
Mar. 05, 2018
CAD ($)
May 31, 2016
USD ($)
Letters of Credit Outstanding, Amount       $ 3,000                
Capital Lease Obligations, Total       13,135 $ 11,800              
Capital Lease Obligations, Current       5,264 5,608              
Capital Lease Obligations, Noncurrent       7,871 6,193              
Capital Leases, Future Minimum Payments Due, Total       14,033                
Capital Leases, Future Minimum Payments, Interest Included in Payments       $ 898                
Klondex Mines Ltd [Member]                        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt                 $ 35,086      
Maximum [Member]                        
Leverage Ratio [1]       4.5                
Revolving Credit Facility [Member]                        
Line of Credit Facility, Current Borrowing Capacity   $ 200,000                    
Line of Credit Facility, Maximum Borrowing Capacity   250,000                   $ 100,000
Letters of Credit Outstanding, Amount       $ 3,000                
Long-term Line of Credit, Total   71,000   0                
Revolving Credit Facility [Member] | Klondex Mines Ltd [Member]                        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt                 $ 35,000      
Repayments of Lines of Credit   $ 35,000                    
Revolving Credit Facility [Member] | Subsequent Event [Member]                        
Proceeds from Lines of Credit, Total $ 48,000                      
Revolving Credit Facility [Member] | Scenario, Forecast [Member]                        
Leverage Ratio               4        
Letter of Credit [Member]                        
Letter of Credit Outstanding, Fronting Fee   0.20%                    
Letter of Credit [Member] | Minimum [Member]                        
Letter of Credit, Participation Fee, Percent   2.25%                    
Letter of Credit [Member] | Maximum [Member]                        
Letter of Credit, Participation Fee, Percent   3.25%                    
Senior Notes [Member]                        
Debt Instrument, Face Amount     $ 500,000                  
Payment for Pension Benefits             $ 6,500          
Proceeds from Issuance of Senior Long-term Debt     $ 490,000                  
Underwriting Discount on Senior Notes     2.00%                  
Debt Instrument, Unamortized Discount, Total     $ 10,000 3,000                
Debt Instrument, Interest Rate, Stated Percentage     6.875%                  
Interest Expense, Debt, Total       $ 36,300 35,300 $ 20,100            
Interest Costs Capitalized         900 $ 16,200            
Debt Instrument, Redemption Price, Percentage       101.00%                
Senior Notes [Member] | Costs Related to Private Offering and Tender Offer [Member]                        
Interest Expense, Debt, Total         $ 900              
Series 2018-A Senior Notes [Member]                        
Debt Instrument, Face Amount                   $ 30,800 $ 40.0  
Debt Instrument, Unamortized Discount, Total                     $ 0.2  
Debt Instrument, Interest Rate, Stated Percentage                   4.68% 4.68%  
Interest Expense, Debt, Total       $ 1,400                
Debt Instrument, Issuance, Discount Rate                   0.58% 0.58%  
[1] The leverage ratio will change to 4.00:1 effective January 1, 2020.