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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract] |
Schedule of Asset Retirement Obligations | The table below (in thousands) reflects the changes to our ARO:
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|  | 2016 |  |  | 2015
﻿Balance, beginning of year |  | $ | 12,231 |  |  | $ | 12,074
﻿Accretion |  |  | 1,029 |  |  |  | 498
﻿Additions |  |  |  |  |  |  |
﻿Other |  |  |  |  |  |  | (341)
﻿Balance, end of year |  | $ | 13,260 |  |  | $ | 12,231
﻿

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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