Fair Value Measurements - Recurring Basis (Details) - USD ($)
Jun. 30, 2014
Nov. 05, 2013
Jan. 31, 2016
Jet Prep Ltd.      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Contingent consideration     $ 143,000
Assumed contingent obligation     1,138,000
Contingent consideration period   7 years  
Level 3 | Jet Prep Ltd. | Minimum      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Assumed contingent obligation   $ 810,000  
Level 3 | Recurring basis | Jet Prep Ltd.      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Contingent consideration   2,490,000 143,000
Assumed contingent obligation   $ 1,720,000 1,138,000
Contingent consideration period   7 years  
Level 3 | Recurring basis | Jet Prep Ltd. | Contingent Consideration      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Discount rate of cash flow projections (as a percent)   12.60%  
Total potential contingent consideration payments, low end of range     0
Total potential contingent consideration payments, high end of range     $ 452,000
Level 3 | Recurring basis | Jet Prep Ltd. | Assumed contingent liability      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Discount rate of cash flow projections (as a percent)   2.50%  
Level 3 | Recurring basis | Cantel Medical UK      
Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis      
Contingent guaranteed obligation $ 1,414,000    
Discount rate of cash flow projections (as a percent) 10.10%