XML 37 R25.htm IDEA: XBRL DOCUMENT
v3.21.1

SIGNIFICANT CUSTOMER INFORMATION | 3 Months Ended
--- | ---
Mar. 31, 2021
SIGNIFICANT CUSTOMER INFORMATION |
SIGNIFICANT CUSTOMER INFORMATION | NOTE 18. SIGNIFICANT CUSTOMER INFORMATION The following table summarizes sales, and percentages of sales, by customers that individually accounted for 10% or more of our sales: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
​ |  | 2021 | ​ | ​ | 2020 | ​
Applied Materials, Inc. | ​ | $ | 67,788 |  | 19.3 | % |  | $ | 50,981 |  | 16.2 | %
Lam Research | ​ | ​ | * |  | * | % | ​ | ​ | 32,996 |  | 10.5 | %
​ The following table summarizes the accounts receivable balances, and percentages of the total accounts receivable, for customers that individually accounted for 10% or more of accounts receivable: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, | ​ |  | December 31, | ​
​ | ​ | 2021 | ​ | ​ | 2020 | ​
Applied Materials, Inc. | ​ | $ | 40,357 |  | 17.0 | % |  | $ | 33,402 |  | 14.2 | %
Nidec Motor Corporation | ​ | ​ | * | ​ | * | % |  | ​ | 24,344 | ​ | 10.4 | %
​ * Customer’s balance was less than 10% of total. ​ Our sales to Applied Materials, Inc. and Lam Research include precision power products used in semiconductor processing and solar and flat panel display. Our sales to Nidec Motor Corporation are primarily embedded power products used in industrial motor drives. No other customer accounted for 10% or more of our sales or accounts receivable balances during these periods.

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
Name: | us-gaap_SegmentReportingDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration