ACQUISITIONS (Details Textuals) (USD $)	3 Months Ended	9 Months Ended
	Apr. 30, 2014	Apr. 30, 2014
Business Acquisition [Line Items]
Goodwill (excess cost over value of net assets acquired)		$ 99,744,000
Medistad [Member]
Business Acquisition [Line Items]
Business Acquisition, Name of Acquired Entity		Medistad Holding BV
SoloHill [Member]
Business Acquisition [Line Items]
Business Acquisition, Name of Acquired Entity		SoloHill Engineering
Contingent Consideration	3,000,000	3,000,000
Medistad and Solohill [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired		30,677,000
ATMI LifeSciences [Member]
Business Acquisition [Line Items]
Business Acquisition, Name of Acquired Entity		ATMI LifeSciences
Payments to Acquire Businesses, Gross	185,000,000
Working Capital Adjustments	$ 5,793,000