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Concentration of Business (Tables) | 12 Months Ended
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Mar. 31, 2019
Risks and Uncertainties [Abstract] |
Schedules of Revenue Concentration of Risk | The Company sells its products to customers throughout the US and to foreign customers in various countries, with concentrations as follows:
| Years Ended March 31,
| 2019 |  | 2018 |  | 2017
International net sales | $ | 742,079 |  |  | $ | 729,278 |  |  | $ | 648,844 |
% of net sales | 36.7 | % |  | 38.3 | % |  | 36.2 | %
| Years Ended March 31,
| 2019 |  | 2018 |  | 2017
Net sales in foreign currencies | $ | 605,725 |  |  | $ | 617,867 |  |  | $ | 539,440 |
% of net sales | 30.0 | % |  | 32.5 | % |  | 30.1 | %
Ten largest customers as % of net sales | 27.7 | % |  | 28.2 | % |  | 24.8 | %
Schedule of long-lived assets, which consist of property and equipment, by major country | Long-lived assets, which consist of net property and equipment, was as follows:
| As of March 31,
| 2019 |  | 2018
US | $ | 196,702 |  |  | $ | 203,956 |
Foreign* | 17,094 |  |  | 16,206 |
Total | $ | 213,796 |  |  | $ | 220,162 |
*No single foreign country’s net property and equipment comprised 10.0% or more of the Company’s total net property and equipment as of March 31, 2019 and March 31, 2018.

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6327-108592 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6442-108592 + Details
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