Clean-up and other costs.

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- Definition

Disposal Group, Including Discontinued Operation, Gain on Involuntary Conversion

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No definition available.

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- Definition

Disposal Group Including Discontinued Operation Loss On Impairment

+ References

No definition available.

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- Definition

Disposition of Ambulance Net Assets

+ References

No definition available.

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- Definition

Insurance Deductible.

+ References

No definition available.

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- Definition

The gains (losses) included in earnings resulting from the sale or disposal of tangible assets. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 3

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-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

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- Definition

This item represents the cumulative amount paid in excess of fair value for acquired assets from one or more business combinations, after to the initial recording thereof.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 33

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- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Number 141R

-Paragraph 72

-Subparagraph d

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-Subparagraph b

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- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Paragraph 15, 16

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Discontinued Operations - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended					3 Months Ended	9 Months Ended		4 Months Ended	3 Months Ended
	Feb. 14, 2010	Apr. 30, 2013	Apr. 30, 2011	Jul. 31, 2013	Apr. 30, 2013	Apr. 30, 2012	Jul. 31, 2011	Apr. 30, 2011	Apr. 30, 2013 Buses	Apr. 30, 2013 Buses	Jul. 31, 2013 Buses	Nov. 01, 2013 Scenario, Forecast	Apr. 30, 2013 Discontinued Operations Buses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected cash receipt from sale of business												$ 100,000,000
Amount deductible per policy	5,000,000
Insurance recoveries recognized							10,437,000
Clean up and other costs							1,020,000
Gain on involuntary conversion							9,417,000
Amortizable intangible assets impairment charge			(1,430,000)	(11,525,000)			(1,430,000)						4,715,000
Goodwill fair value											0
Third quarter impairment					0	0		0	6,810,000
Impairment of goodwill and intangible assets										11,525,000
Disposition of ambulance net assets		12,051,000
Gain (loss) recognized on sale of assets		$ 0