Quarterly report pursuant to Section 13 or 15(d)

Acquisitions Acquisitions (Details)

v3.3.1.900
Acquisitions Acquisitions (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2016
Feb. 18, 2016
Feb. 29, 2016
Feb. 29, 2016
Feb. 28, 2015
Feb. 17, 2016
Business Acquisition [Line Items]            
Business acquisition       $ 7,210    
Payments to Acquire Businesses, Net of Cash Acquired       $ 15,026 $ 0  
Larzep            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 5,332
Business acquisition     $ 7,210      
Supplemental Deferred Purchase Price   $ 1,500        
Payments to Acquire Businesses, Net of Cash Acquired   $ 14,600        
Business Acquisition, Effective Date of Acquisition   Feb. 17, 2016        
Tradenames | Larzep            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           1,900
Customer relationships | Larzep            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 3,400
Subsequent Event | FourQuest            
Business Acquisition [Line Items]            
Payments to Acquire Businesses, Gross $ 64,300