Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromDebtNetOfIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

+ Details

Name:	us-gaap_SeniorLongTermNotes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Backstop agreement fee.

+ References

No definition available.

+ Details

Name:	vdi_BackstopAgreementFee
Namespace Prefix:	vdi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Backstop agreement fee paid in cash.

+ References

No definition available.

+ Details

Name:	vdi_BackstopAgreementFeePaidInCash
Namespace Prefix:	vdi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Backstop agreement fee paid in senior secured second lien notes.

+ References

No definition available.

+ Details

Name:	vdi_BackstopAgreementFeePaidInSeniorSecuredSecondLienNotes
Namespace Prefix:	vdi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=vdi_TenPercentSecondLienNotesMember
Namespace Prefix:
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Debt - 10% Senior Secured Second Lien Notes - Additional Information (Detail) - USD ($) $ in Millions		5 Months Ended	6 Months Ended
	Dec. 03, 2015	Jun. 30, 2016	Jun. 30, 2016	Feb. 11, 2016
Debt Instrument [Line Items]
Debt Instrument, interest rate		10.00%	10.00%
New 10% Second Lien Notes \| Predecessor
Debt Instrument [Line Items]
Debt Instrument, interest rate	10.00%
Senior notes, noncurrent	$ 75.0
10% Second Lien Notes
Debt Instrument [Line Items]
Debt Instrument, interest rate		10.00%	10.00%	10.00%
Debt instrument, maturity date		Dec. 31, 2020
Debt instrument, payment terms			Interest on outstanding 10% Second Lien Notes is payable semi-annually in arrears, commencing on June 30, 2016. Interest is computed on the basis of a 360-day year comprised of twelve 30-day months.
10% Second Lien Notes \| Predecessor
Debt Instrument [Line Items]
Debt Instrument, interest rate	10.00%
Backstop agreement premium paid	$ 2.2
Backstop agreement premium paid in cash	1.1
Backstop agreement premium paid in senior secured second lien notes	1.1
Issuance of debt	76.1
Proceeds from issuance of senior notes net of fees paid	$ 73.9