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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018 | Apr. 01, 2017 | Apr. 02, 2016 | Mar. 31, 2019 | Apr. 01, 2018
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Optional exemption term | 1 year |  |  |  |  |
Term of medical device excise tax suspension | 2 years |  |  | 2 years |  |
Cash and cash equivalents maximum maturity period | 3 months |  |  |  |  |
Goodwill impairment | $ 0 | $ 0 | $ 57,000,000 |  |  |
Intangible asset impairment | 0 | 0 | 4,800,000 |  |  |
Impairment charges related to the discontinuance of certain capitalized software projects | 0 | 0 | 4,000,000 |  |  |
Other Liabilities |  |  |  |  |  |
VAT liabilities | 3,995,000 | 2,932,000 |  |  |  |
Forward contracts | 5,348,000 | 1,583,000 |  |  |  |
Deferred revenue | 27,279,000 | 25,814,000 |  |  |  |
Accrued taxes | 8,451,000 | 5,340,000 |  |  |  |
All other | 46,459,000 | 29,991,000 |  |  |  |
Total | 91,532,000 | 65,660,000 |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Unfunded pension liability | 13,766,000 | 14,045,000 |  |  |  |
Unrecognized tax benefit | 2,895,000 | 2,850,000 |  |  |  |
Transition tax liability | 6,305,000 | 7,837,000 |  |  |  |
All other | 5,814,000 | 9,526,000 |  |  |  |
Total | 28,780,000 | 34,258,000 |  |  |  |
Advertising expense | 4,500,000 | 3,100,000 | 2,500,000 |  |  |
Foreign currency losses | $ 2,300,000 | $ 200,000 | $ 1,800,000 |  |  |
Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Software capitalization term | 5 years |  |  |  |  |
Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Software capitalization term | 10 years |  |  |  |  |
Building | Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 30 years |  |  |  |  |
Building | Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 40 years |  |  |  |  |
Building improvements | Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 5 years |  |  |  |  |
Building improvements | Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 20 years |  |  |  |  |
Plant equipment and machinery | Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 3 years |  |  |  |  |
Plant equipment and machinery | Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 15 years |  |  |  |  |
Office equipment and information technology | Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 3 years |  |  |  |  |
Office equipment and information technology | Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 10 years |  |  |  |  |
Haemonetics equipment | Minimum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 3 years |  |  |  |  |
Haemonetics equipment | Maximum |  |  |  |  |  |
Summary of Significant Accounting Pronouncements [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life | 7 years |  |  |  |  |
Net Revenues | Customer Concentration Risk | Ten Largest Customers |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Concentration risk | 52.00% | 45.00% | 42.00% |  |  |
Net Revenues | Customer Concentration Risk | Two Plasma Customers, CSL Plasma Inc. (CSL) and Grifols S.A. (Grifols) |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Concentration risk | 27.00% | 26.00% | 24.00% |  |  |
ASU 2016-02 | Minimum | Scenario, Forecast |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Right-of-use assets |  |  |  |  | $ 20,000,000 |
Lease liabilities |  |  |  |  | 20,000,000 |
ASU 2016-02 | Maximum | Scenario, Forecast |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Right-of-use assets |  |  |  |  | 25,000,000 |
Lease liabilities |  |  |  |  | $ 25,000,000 |
ASU 2014-09 | Net Revenues | Product Concentration Risk |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Concentration risk | 8.20% | 8.60% |  |  |  |
Difference between Revenue Guidance in Effect before and after Topic 606 | ASU 2014-09 |  |  |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |
Increase to retained earnings |  |  |  |  |  | $ 1,500,000

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