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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) | 12 Months Ended
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Dec. 31, 2021 $ / shares
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY |
Cash dividend declared per share | $ 0.10

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

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- Definition Cash dividends declared during the period for each share of common stock outstanding. + References No definition available. + Details
Name: | zyxi_CashDividendsPerShareDeclared
Namespace Prefix: | zyxi_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration