Annual report pursuant to Section 13 and 15(d)

Note 12 - Accrued Closure Costs and ARO (Tables)

v3.6.0.2
Note 12 - Accrued Closure Costs and ARO (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Amounts in thousands
        
Balance as of December 31, 2014
   $
5,508
 
Accretion expense
    
299
 
Payments
    
(331
 )
Adjustment to closure liability
    
(175
 )
Balance as of December 31, 2015
    
5,301
 
Accretion expense
    
374
 
Payments
    
(693
 )
Adjustment to closure liability
    
2,333
 
Balance as of December 31, 2016
   $
7,315
 
Schedule of Asset Retirement Obligations [Table Text Block]
Amounts in thousands
        
Balance as of December 31, 2014
   $
2,870
 
Amortization of closure and post-closure asset
    
(152
 )
Adjustment to closure and post-closure asset
    
(143
 )
Balance as of December 31, 2015
    
2,575
 
Amortization of closure and post-closure asset
    
(760
 )
Adjustment to closure and post-closure asset
    
2,333
 
Balance as of December 31, 2016
   $
4,148