XML 72 R64.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Segment Reporting - Summary of Revenue Attributable to Services Provided by Company (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014 | Jan. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 117,852 | $ 112,167 | $ 378,706 | $ 346,641
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 117,852 | 112,167 | 378,706 | 346,641
Operating Segments [Member] | Solid Waste Operations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 87,780 | 84,189 | 286,906 | 261,699
Operating Segments [Member] | Solid Waste Operations [Member] | Reportable Subsegments [Member] | Collection [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 54,276 | 51,459 | 171,520 | 157,124
Operating Segments [Member] | Solid Waste Operations [Member] | Reportable Subsegments [Member] | Disposal [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 28,907 | 27,219 | 101,404 | 90,569
Operating Segments [Member] | Solid Waste Operations [Member] | Reportable Subsegments [Member] | Power Generation [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 2,791 | 3,400 | 6,813 | 8,856
Operating Segments [Member] | Solid Waste Operations [Member] | Reportable Subsegments [Member] | Processing [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,806 | 2,111 | 7,169 | 5,150
Operating Segments [Member] | Organics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 8,777 | 8,725 | 28,128 | 25,972
Operating Segments [Member] | Customer Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 11,135 | 8,551 | 30,822 | 27,296
Operating Segments [Member] | Recycling [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 10,160 | $ 10,702 | $ 32,850 | $ 31,674

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration