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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES | 12 Months Ended
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Dec. 31, 2020
Risks and Uncertainties [Abstract] |
SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES [Text Block] | 8. SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES: Customer Concentration The Company’s top ten customers accounted for approximately 62%, 54% and 56% of revenues in 2020, 2019 and 2018, respectively. A significant portion of these revenues are attributable to sales of the Company’s products to distributors of electronic components. These distributors sell the Company’s products to a broad, diverse range of end users, including OEMs and merchant power supply manufacturers. Sales to distributors in 2020, 2019 and 2018 were $367.7 million, $304.6 million and $313.9 million, respectively. Direct sales to OEMs and power-supply manufacturers accounted for the remainder. The following customers represented 10% or more of the Company’s net revenues for the respective years: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
Customer |  | 2020 | ​ | 2019 | ​ | 2018
Avnet | ​ | 19 | % | ​ | 11 | % | ​ | 14 | %
Honestar Technologies Co., Ltd. |  | 11 | % | ​ | * | ​ | ​ | * | ​
________________________ *Total customer revenue was less than 10% of net revenues. No other customers accounted for 10% or more of the Company’s net revenues in the periods presented. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consisted principally of cash investments and trade receivables. The Company does not have any off-balance-sheet credit exposure related to its customers. As of December 31, 2020 and December 31, 2019, 90% and 63% of accounts receivable were concentrated with the Company’s top ten customers, respectively. The following customers represented 10% or more of accounts receivable:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
Customer |  | 2020 | ​ | 2019
Powertech Distribution Ltd. |  | 10 | % | ​ | 10 | %
Avnet |  | 50 | % | ​ | * | ​
________________________ *Total customer accounts receivable was less than 10% of net accounts receivables. No other customers accounted for 10% or more of the Company’s accounts receivable in the periods presented. Geographic Net Revenues The Company markets its products globally through its sales personnel and a worldwide network of independent sales representatives and distributors. Geographic net revenues based on “bill to” customer locations were as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
(In thousands) |  | 2020 |  | 2019 |  | 2018
United States of America | ​ | $ | 11,065 | ​ | $ | 10,662 | ​ | $ | 15,315
Hong Kong/China | ​ |  | 306,938 | ​ |  | 237,341 | ​ |  | 218,752
Taiwan | ​ |  | 21,650 | ​ |  | 36,297 | ​ |  | 43,081
Korea | ​ |  | 40,059 | ​ |  | 30,395 | ​ |  | 33,877
Western Europe (excluding Germany) | ​ |  | 33,564 | ​ |  | 36,025 | ​ |  | 49,834
Japan | ​ |  | 17,453 | ​ |  | 15,496 | ​ |  | 19,897
Germany | ​ |  | 23,242 | ​ |  | 20,197 | ​ |  | 14,403
Other | ​ |  | 34,347 | ​ |  | 34,256 | ​ |  | 20,796
Total net revenues | ​ | $ | 488,318 | ​ | $ | 420,669 | ​ | $ | 415,955
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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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