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Commitments and Contingencies (Tables) | 8 Months Ended
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Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Payments under Non-Cancellable Operating Leases | Future minimum rental payments under non-cancellable operating leases, which include landfill operating leases, as of December 31, 2014 are as follows:
Estimated Future Minimum Rental Payments as of December 31, 2014: |
2015 |  | $ | 13,169 |
2016 |  |  | 12,899 |
2017 |  |  | 12,448 |
2018 |  |  | 13,516 |
2019 |  |  | 12,490 |
Thereafter |  |  | 117,608 |
Total minimum rental payments |  | $ | 182,130 |
Schedule of Environmental Liability Associated with Postdam | The changes to the environmental remediation liability associated with the Potsdam environmental remediation liability for transition period 2014, fiscal year 2014 and fiscal year 2013 are as follows:
|  | Eight Months Ended December 31, 2014 |  |  | Fiscal Year Ended April 30, |
|  |  | 2014 |  |  | 2013 |
Beginning balance |  | $ | 5,320 |  |  | $ | 5,297 |  |  | $ | 5,210 |
Obligations incurred |  |  | — |  |  |  | 31 |  |  |  | — |
Revisions in estimates (1) |  |  | — |  |  |  | (118 | ) |  |  | — |
Accretion expense |  |  | 92 |  |  |  | 138 |  |  |  | 138 |
Payments |  |  | (270 | ) |  |  | (28 | ) |  |  | (51 | )
Ending balance |  | $ | 5,142 |  |  | $ | 5,320 |  |  | $ | 5,297 |
(2) | Associated with changes in estimated future costs to complete the remediation, the discount rate and/or the portion of the total remediation costs that we are responsible for.
Schedule of Total Expected Environmental Remediation Payments for Succeeding Year | The total expected environmental remediation payments, in today’s dollars, for each of the five succeeding fiscal years and the aggregate amount thereafter are as follows:
Estimated Future Environmental Remediation Payments as of December 31, 2014: |
2015 |  | $ | 250 |
2016 |  |  | 3,084 |
2017 |  |  | 826 |
2018 |  |  | 42 |
2019 |  |  | 26 |
Thereafter |  |  | 793 |
Total |  | $ | 5,021 |
Reconciliation of Expected Aggregate Uninflated, Undiscounted Environmental Remediation Liability to Amount Recognized in Statement of Financial Position | A reconciliation of the expected aggregate non-inflated, undiscounted environmental remediation liability to the amount recognized in the statement of financial position as of December 31, 2014 is as follows:
Undiscounted liability |  | $ | 5,021 |
Plus inflation |  |  | 121 |
Liability balance – December 31, 2014 |  | $ | 5,142 |

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- Definition Tabular disclosure of future environmental remediation payments as of the latest balance sheet presented, in aggregate and for each of the five succeeding fiscal years and thereafter. + References No definition available. + Details
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- Definition Reconciliation of the environmental remediation liability to the undiscounted environmental remediation liability as of the latest balance sheet date. + References No definition available. + Details
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- Definition Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13283-110859 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 10 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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