Annual report pursuant to Section 13 and 15(d)

Note 12 - Accrued Closure Costs and ARO - Reported Closure Asset (Details)

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Note 12 - Accrued Closure Costs and ARO - Reported Closure Asset (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Balance $ 2,575 $ 2,870
Amortization of closure and post-closure asset (760) (152)
Adjustment to closure and post-closure asset 2,333 (143)
Balance $ 4,148 $ 2,575