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Goodwill and Intangible Assets (Tables) | 6 Months Ended
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Oct. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Activity and Balances Related to Goodwill | The following table shows the activity and balances related to goodwill from April 30, 2014 through October 31, 2014:
|  | April 30, 2014 |  |  | Acquisitions |  |  | October 31, 2014 |
Eastern region |  | $ | 17,429 |  |  | $ | — |  |  | $ | 17,429 |
Western region |  |  | 87,666 |  |  |  | 31 |  |  |  | 87,697 |
Recycling |  |  | 12,315 |  |  |  | — |  |  |  | 12,315 |
Other |  |  | 1,729 |  |  |  | — |  |  |  | 1,729 |
Total |  | $ | 119,139 |  |  | $ | 31 |  |  | $ | 119,170 |
Components of Intangible Assets | Intangible assets as of October 31, 2014 and April 30, 2014 consisted of the following:
|  | Covenants Not-to-Compete |  |  | Client Lists |  |  | Total |
Balance, October 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ | 17,296 |  |  | $ | 16,075 |  |  | $ | 33,371 |
Less accumulated amortization |  |  | (15,638 | ) |  |  | (5,421 | ) |  |  | (21,059 | )
|  | $ | 1,658 |  |  | $ | 10,654 |  |  | $ | 12,312 |
|  | Covenants Not-to-Compete |  |  | Client Lists |  |  | Total |
Balance, April 30, 2014 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ | 17,245 |  |  | $ | 15,760 |  |  | $ | 33,005 |
Less accumulated amortization |  |  | (15,363 | ) |  |  | (4,222 | ) |  |  | (19,585 | )
|  | $ | 1,882 |  |  | $ | 11,538 |  |  | $ | 13,420 |
Estimated Future Amortization Expense |
Estimated Future Amortization Expense as of October 31, 2014: |  |  |  |
For the eight-month transition period ending December 31, 2014 |  | $ | 502 |
For the fiscal year ending December 31, 2015 |  | $ | 2,569 |
For the fiscal year ending December 31, 2016 |  | $ | 2,045 |
For the fiscal year ending December 31, 2017 |  | $ | 1,783 |
For the fiscal year ending December 31, 2018 |  | $ | 1,582 |
Thereafter |  | $ | 3,831 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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