Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 102,010	$ 98,351	$ 94,590	$ 91,237	$ 93,936	$ 91,631	$ 85,001	$ 81,520	$ 386,189	$ 352,089	$ 339,426
Residential [Member]
Net sales									311,214	275,442	258,095
Commercial [Member]
Net sales									$ 74,975	$ 76,647	$ 81,331