DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment, Net [Abstract]
Land	$ 16,564	$ 16,418
Buildings and improvements (useful life: 7-30 years)	115,401	115,909
Machinery and equipment (useful life: 2-10 years)	112,719	108,477
Software (useful life: 5-10 years)	50,631	46,806
Construction in progress	5,428	6,899
Property, plant, and equipment, gross	300,743	294,509
Accumulated depreciation and amortization	(158,614)	(144,202)
Property, plant, and equipment, net	142,129	150,307
Depreciation and amortization expense	21,100	20,700	$ 19,900
Unamortized capitalized software costs	23,600	24,400
Amortization expense related to capitalized software costs	$ 4,900	$ 4,400	$ 4,100
Building and improvements \| Minimum
Property, Plant and Equipment, Net [Abstract]
Useful life	7 years
Building and improvements \| Maximum
Property, Plant and Equipment, Net [Abstract]
Useful life	30 years
Machinery and equipment \| Minimum
Property, Plant and Equipment, Net [Abstract]
Useful life	2 years
Machinery and equipment \| Maximum
Property, Plant and Equipment, Net [Abstract]
Useful life	10 years
Software \| Minimum
Property, Plant and Equipment, Net [Abstract]
Useful life	5 years
Software \| Maximum
Property, Plant and Equipment, Net [Abstract]
Useful life	10 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Name Accounting Standards Codification
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-Section S99
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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

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- Definition

Amount of expense for amortization of capitalized computer software costs.

+ References

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-Publisher FASB
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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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- References

No definition available.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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