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Twenty One [Member] January Fourth Two Thousand Twenty One [Member] Hydraulics & pneumatics Hydraulics And Pneumatics [Member] Hydraulics And Pneumatics [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Reporting Segment Reporting [Text Block] Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Safety supplies Safety Supplies [Member] Safety Supplies [Member] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] January 2, 2019 January Second Two Thousand Nineteen [Member] January Second Two Thousand Nineteen [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Common stock Common Stock, Number of Shares, Par Value and Other 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