Note 11 - Accrued Closure Costs and Asset Retirement Obligations ("ARO") (Tables)

12 Months Ended

Dec. 31, 2014

Amounts in thousands
Balance as of December 31, 2012	$	11,349
Accretion expense		272
Adjustment to closure liability		(6,399	)
Balance as of December 31, 2013		5,222
Accretion expense		286
Balance as of December 31, 2014	$	5,508

Amounts in thousands
Balance as of December 31, 2012	$	9,080
Adjustment to closure and post-closure asset		(5,830	)
Amortization of closure and post-closure asset		(289	)
Balance as of December 31, 2013		2,961
Amortization of closure and post-closure asset		(91	)
Balance as of December 31, 2014	$	2,870