Acquisitions (Details)	Sep. 30, 2017
Metro Irrigation Supply Company Ltd [Member]
Business Acquisition [Line Items]
Number of sales centers	8
Lincoln Equipment Inc (Lincoln Aquatics) [Member]
Business Acquisition [Line Items]
Number of sales centers	2
New Star Holdings Pty Ltd (Newline Pool Products) [Member]
Business Acquisition [Line Items]
Number of sales centers	1