Acquisitions - Additional Information (Detail) (USD $)
|
3 Months Ended | 9 Months Ended | 12 Months Ended | 0 Months Ended | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
May 31, 2013
|
May 31, 2013
|
May 31, 2012
|
Aug. 31, 2012
Entity
|
Aug. 31, 2012
Customer relationships
|
Aug. 31, 2012
Tradenames
|
Aug. 31, 2012
Technologies
|
Aug. 31, 2012
Non-compete Agreements
|
Aug. 31, 2012
Engineered Solutions
Entity
|
Jul. 20, 2012
CrossControl
|
Mar. 28, 2012
Turotest
|
Feb. 10, 2012
Jeyco
|
|
Business Acquisition [Line Items] | ||||||||||||
Acquisition related costs | $ 200,000 | $ 1,000,000 | ||||||||||
Deferred purchase price for business acquisitions | 3,600,000 | 5,300,000 | ||||||||||
Number of business acquisitions | 3 | |||||||||||
Number of tuck-in acquisitions | 2 | |||||||||||
Cash paid for business acquisitions, net of cash acquired | 0 | 28,776,000 | 40,600,000 | 8,100,000 | 20,700,000 | |||||||
Recognition of goodwill due to acquisitions | 40,800,000 | |||||||||||
Finite-lived Intangible Assets Acquired | $ 32,800,000 | $ 24,200,000 | $ 5,700,000 | $ 2,200,000 | $ 700,000 |