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Long-Term Rental Prepayment (Details) K in Thousands, $ in Thousands		12 Months Ended
	Mar. 29, 2019	Mar. 31, 2020 USD ($)	Mar. 31, 2020 MMK (K)	Mar. 31, 2019 USD ($)
Long-Term Rental Prepayment (Textual)
Long-term rental prepayment				$ 871
Konig Company [Member]
Long-Term Rental Prepayment (Textual)
Rental agreement, description		Approximately 12 years of rental payments. Upon application of Topic 842, the current and non-current portion of rental prepayment as of April 1, 2019 for $79 and $871 respectively were reclassified to ROU assets.	Approximately 12 years of rental payments. Upon application of Topic 842, the current and non-current portion of rental prepayment as of April 1, 2019 for $79 and $871 respectively were reclassified to ROU assets.
Prepaid rent		$ 950
Rental Agreement [Member]
Long-Term Rental Prepayment (Textual)
Rental agreement, description	Company have entered into a 50-year rental agreement for a manufacturing complex in Yangon, Myanmar (the "New Facility").
Kayser Myanmar [Member]
Long-Term Rental Prepayment (Textual)
Non-controlling interest		16.00%
Rental agreement, description		The lease for the New Facility has a term of 50 years, Kayser Myanmar has the option to extend the lease term for two consecutive 10-year terms on the same terms and conditions as in effect for the initial 50-year period.	The lease for the New Facility has a term of 50 years, Kayser Myanmar has the option to extend the lease term for two consecutive 10-year terms on the same terms and conditions as in effect for the initial 50-year period.
Monthly lease payment		$ 7,200
Kayser Myanmar [Member] | Myanmar Kyat [Member]
Long-Term Rental Prepayment (Textual)
Monthly lease payment | K			K 10,000

X

- Definition

For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, long term rental prepayments

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Description of rental agreement.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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- Definition

The amount of the monthly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller.

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