Business Combinations Business Combinations Textuals (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jul. 01, 2014	May 01, 2014	Dec. 31, 2013
Knox Acquisition [Member]
Business Acquisition, Percentage of Voting Interests Acquired				100.00%
Total Consideration	$ 132,500
Cash Paid at Closing				118,000
Funding from Holdback Payments				14,000
Debt Instrument, Interest Rate During Period	1.50%
Total assets acquired				164,900
Rodensa & GSB Acquisition [Member]
Total Consideration	54,900
Funding from Holdback Payments				6,900
Total assets acquired				21,300
Goodwill plus Intangibles Acquired				33,600
Reliance Acquisition [Member]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Total Consideration		179,800
Funding from Holdback Payments					20,000
Debt Instrument, Interest Rate During Period		2.00%
Total assets acquired					27,500
Goodwill plus Intangibles Acquired					152,300
Funding from Canadian Cash					31,900
Funding From Existing Credit Facility					36,600
Funding from New Credit Facility					100,000
Tops Acquisition [Member]
Total Consideration			17,000
Funding from Holdback Payments						2,550
Total assets acquired						3,900
Goodwill plus Intangibles Acquired						13,100
Prudential Facility [Member]
Long-term Debt	$ 170,000			$ 120,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate				3.19%