| Cover | Mar. 05, 2020 |
| Cover page. | |
| Document Type | 8-K/A |
| Document Period End Date | Mar. 5, 2020 |
| Entity Registrant Name | CANTEL MEDICAL CORP. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-31337 |
| Entity Tax Identification Number | 22-1760285 |
| Entity Address, Address Line One | 150 Clove Road |
| Entity Address, City or Town | Little Falls |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07424 |
| City Area Code | (973) |
| Local Phone Number | 890-7220 |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | CMD |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000019446 |
| Amendment Flag | true |
| Amendment Description | This Amendment No. 1 to the Current Report on Form 8-K (“Amendment”) is being filed to amend Items 2.02 and 9.01 of the Current Report on Form 8-K filed on March 5, 2020 (“Original Form 8-K”) announcing the Company’s financial results for the quarter ended January 31, 2020 (Registrant’s second quarter of fiscal year 2020) solely for the purpose of adding certain line items on the Statements of Cash Flows and correcting certain items within the footnotes attached to our non-GAAP reconciliation tables and correcting certain items within the footnotes attached to our non-GAAP reconciliation tables. There were no changes to the reported (1) Net Cash provided by operating activities, (2) Net cash used in investing activities and (3) Net cash provided by financing activities in the Original Form 8-K for all periods presented. |
