v3.7.0.1

Discontinued Operations (Tables) | 12 Months Ended
--- | ---
Apr. 30, 2017
Discontinued Operations and Disposal Groups [Abstract] |
Results from Discontinued Operations | Results from discontinued operations were as follows (in thousands):
| Year Ended April 30,
| 2017 |  | 2016 |  | 2015
Revenues from discontinued operations | $ | — |  |  | $ | — |  |  | $ | 2,535 |
Income from discontinued operations before income taxes | $ | — |  |  | $ | — |  |  | $ | 303 |
Income tax expense | — |  |  | — |  |  | 23 |
Net income from discontinued operations | — |  |  | — |  |  | 280 |
Loss on disposal of discontinued operations, net of tax | — |  |  | — |  |  | (1,537 | )
Loss from discontinued operations, net of tax | $ | — |  |  | $ | — |  |  | $ | (1,257 | )
Calculation of Loss on Disposal of Discontinued Operations | The Company recorded a loss on the disposal of discontinued operations of $1.5 million, net of tax, in the fiscal year ended April 30, 2015 which was calculated as follows (in thousands):
Cash consideration | $ | 30,000 |
Less: |
Basis in net assets as of July 2, 2014 | 39,972 |
Costs incurred directly attributable to the transaction | 1,039 |
Loss before income taxes | (11,011 | )
Income tax benefit | (282 | )
Loss on disposal of discontinued operations, net of taxes | (10,729 | )
Loss on disposal of discontinued operations, net of taxes, previously recognized | 9,192 |
Loss on disposal of discontinued operations, net of tax, recognized in fiscal 2015 | $ | (1,537 | )

X
- Definition Schedule Of Gain Loss On Sale Of Discontinued Operations. + References No definition available. + Details
Name: | bv_ScheduleOfGainLossOnSaleOfDiscontinuedOperationsTextBlock
Namespace Prefix: | bv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64862545&loc=SL51724579-110230 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5D -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760 + Details
Name: | us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration