Acquisitions (Details)	Mar. 31, 2014
DFW Stone Supply, LLC [Member]
Business Acquisition [Line Items]
Number of sales centers	2
Atlantic Chemical & Aquatics Inc. [Member]
Business Acquisition [Line Items]
Number of sales centers	2
B. Shapiro Supply, LLC [Member]
Business Acquisition [Line Items]
Number of sales centers	1
SPSC, Inc. [Member]
Business Acquisition [Line Items]
Number of sales centers	1