RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: Summary of restructuring activity (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring charges and adjustments	$ 1,725	$ 3,430	$ 7,745
Associate-related reserves
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the end of the period	600
Continuing operations
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period	6,693	10,283	5,830
Restructuring charges and adjustments	1,725	3,430	7,745
Payments	(3,675)	(7,020)	(3,292)
Restructuring Reserve, at the end of the period	4,743	6,693	10,283
Continuing operations \| Associate-related reserves
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period	450	4,595	542
Restructuring charges and adjustments	1,663	2,291	6,163
Payments	(1,288)	(6,436)	(2,110)
Restructuring Reserve, at the end of the period	825	450	4,595
Continuing operations \| Lease accruals
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period	6,243	5,688	5,288
Restructuring charges and adjustments	62	1,139	1,582
Payments	(2,387)	(584)	(1,182)
Restructuring Reserve, at the end of the period	$ 3,918	$ 6,243	$ 5,688

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ 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)(2)
-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))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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