Debt Instrument, Fee Amount, Net Balance Shown as a Liability

No definition available.

Name:	ivc_DebtInstrumentFeeAmountNetBalanceShownasaLiability
Namespace Prefix:	ivc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Net Carrying Amount

+ References

No definition available.

+ Details

Name:	ivc_DebtInstrumentNetCarryingAmount
Namespace Prefix:	ivc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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+ Details

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

- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
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+ Details

Name:	us-gaap_DebtInstrumentIncreaseAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types: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

Amount, after accumulated amortization, of debt discount.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of long-term debt and lease obligation, including portion classified as current.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleSubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ivc_ConvertibleSeniorNotesAt500November2024BMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ivc_ConvertibleSeniorNotesAt425March2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ivc_ConvertibleSeniorSecuredNotesAt568July2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ivc_ConvertibleSeniorSecuredNotesAt568July2026July262022IssuanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt Components of Convertible Debt (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt	$ 335,279,000		$ 335,279,000		$ 308,129,000
Convertible Subordinated Debt \| Convertible Senior Notes at 5.00% November 2024
Debt Instrument [Line Items]
Debt Instrument, Increase, Accrued Interest	911,000	$ 911,000	2,734,000	$ 2,733,000
Debt Instrument, Face Amount	$ 72,909,000		$ 72,909,000		72,909,000
Interest rate (as a percent)	5.00%		5.00%
Debt fees	$ (568,000)		$ (568,000)		(769,000)
Debt Instrument, Net Carrying Amount	72,341,000		72,341,000		72,140,000
Convertible Subordinated Debt \| Convertible Senior Notes at 4.25% March 2026
Debt Instrument [Line Items]
Debt Instrument, Increase, Accrued Interest	1,015,000	$ 1,328,000	3,671,000	$ 2,892,000
Debt Instrument, Face Amount	$ 83,525,000		$ 83,525,000		125,000,000
Interest rate (as a percent)	4.25%		4.25%
Debt fees	$ (2,627,000)		$ (2,627,000)		(5,964,000)
Debt Instrument, Net Carrying Amount	80,898,000		80,898,000		119,036,000
Convertible Subordinated Debt \| Convertible Senior Secured Notes at 5.68% July 2026
Debt Instrument [Line Items]
Debt Instrument, Face Amount	31,106,000		31,106,000
Unamortized discount	(1,365,000)		(1,365,000)
Debt fees	(2,278,000)		(2,278,000)
Convertible Subordinated Debt \| Convertible Senior Secured Notes at 5.68% July 2026 - July 26, 2022 Issuance [Domain]
Debt Instrument [Line Items]
Debt Instrument, Increase, Accrued Interest	324,000
Long-term debt	$ 27,463,000		$ 27,463,000		$ 0