Debt Instrument, LIBOR Floor Rate

No definition available.

Name:	avid_DebtInstrumentLIBORFloorRate
Namespace Prefix:	avid_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Periodic Payment, Principal, Percent

+ References

No definition available.

+ Details

Name:	avid_DebtInstrumentPeriodicPaymentPrincipalPercent
Namespace Prefix:	avid_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Covenant Terms, Maximum Net Leverage Ratio

+ References

No definition available.

+ Details

Name:	avid_LineOfCreditFacilityCovenantTermsMaximumNetLeverageRatio
Namespace Prefix:	avid_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Covenant Terms, Minimum Fixed Charge Ratio

+ References

No definition available.

+ Details

Name:	avid_LineOfCreditFacilityCovenantTermsMinimumFixedChargeRatio
Namespace Prefix:	avid_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=avid_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	avid_DebtInstrumentPrincipalPaymentPeriodAxis=avid_DebtInstrumentPrincipalPaymentPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	avid_DebtInstrumentPrincipalPaymentPeriodAxis=avid_DebtInstrumentPrincipalPaymentPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	avid_DebtInstrumentPrincipalPaymentPeriodAxis=avid_DebtInstrumentPrincipalPaymentPeriodThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=avid_JPMorganChaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=avid_CerberusBusinessFinanceLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT AND CREDIT AGREEMENT - Credit Agreement (Details) - USD ($)		12 Months Ended
	Jan. 05, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 10, 2018
Line of Credit Facility [Line Items]
Repayments of Lines of Credit		$ 22,000,000	$ 0	$ 0
Term Loan \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, LIBOR Floor Rate	0.25%
Term Loan \| Debt Instrument, Principal Payment Period One \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Periodic Payment, Principal, Percent	5.00%
Term Loan \| Debt Instrument, Principal Payment Period Two \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Periodic Payment, Principal, Percent	7.50%
Term Loan \| Debt Instrument, Principal Payment Period Three \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Periodic Payment, Principal, Percent	10.00%
Term Loan \| London Interbank Offered Rate (LIBOR) \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Term Loan \| London Interbank Offered Rate (LIBOR) \| Minimum [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Term Loan \| London Interbank Offered Rate (LIBOR) \| Maximum [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.25%
JPMorgan Chase [Member] \| Term Loan \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 180,000,000
JPMorgan Chase [Member] \| Revolving Credit Facility \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 70,000,000
JPMorgan Chase [Member] \| Line of Credit [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Line Of Credit Facility, Covenant Terms, Maximum Net Leverage Ratio	4.00
Line Of Credit Facility, Covenant Terms, Minimum Fixed Charge Ratio	1.20
Cerberus Business Finance LLC [Member] \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 22,500,000
Cerberus Business Finance LLC [Member] \| Line of Credit [Member] \| Subsequent Event [Member]
Line of Credit Facility [Line Items]
Repayments of Lines of Credit	$ 201,000,000