XML 65 R51.htm IDEA: XBRL DOCUMENT v3.20.4

Restructuring and Other Charges - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) position	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring charges (Note 2)	$ 27,381	$ 13,846	$ 13,247
Restructuring charges	27,400	13,800	13,200
Restructuring Reserve, Accrual Adjustment	0	(700)	(600)
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,700	500	2,300
Restructuring Reserve, Accrual Adjustment	(100)	(100)	(300)
International
Restructuring Cost and Reserve [Line Items]
Restructuring charges	21,900	12,700	5,600
Restructuring Reserve, Accrual Adjustment	100	(600)	(300)
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges (Note 2)		600	5,300
Restructuring charges	800	600	5,300
Restructuring Reserve, Accrual Adjustment	$ 0	$ 0	$ 0
Staff Reductions
Restructuring Cost and Reserve [Line Items]
Reduction in headcount	121	99	45
Staff Reductions | Americas
Restructuring Cost and Reserve [Line Items]
Restructuring charges (Note 2)	$ 4,700	$ 500	$ 2,300
Reduction in headcount	42	12	8
Staff Reductions | International
Restructuring Cost and Reserve [Line Items]
Restructuring charges (Note 2)	$ 21,900	$ 12,700	$ 5,600
Reduction in headcount	76	87	34
Staff Reductions | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges (Note 2)	$ 800
Reduction in headcount | position	3		3

X

- Definition

Restructuring Charges before Adjustments - Restructuring charges before any adjustments to the accrual.

+ References

No definition available.

+ Details

Name:	msa_RestructuringChargesbeforeAdjustments
Namespace Prefix:	msa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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

X

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

X

- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

Name:	us-gaap_RestructuringReserveAccrualAdjustment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=msa_AmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=msa_InternationalSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: