Business Combinations Business Combinations Textuals (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Jul. 01, 2014
Atlantic Fasteners & S.G. Morris Acquisitions [Member]
Total Consideration		$ 27,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		16,410
Goodwill plus Intangibles Acquired		10,590
Acquisition Holdback Payable		$ 3,750
Knox Acquisition [Member]
Total Consideration			$ 132,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				$ 132,000
Business Acquisition, Percentage of Voting Interests Acquired				100.00%
Cash Paid at Closing				$ 118,000
Funding from Holdback Payments				14,000
Debt Instrument, Interest Rate During Period		1.50%
Purchase price	$ 7,100		132,800
Rodensa, GSB & Ira Acquisition [Member] [Member]
Total Consideration			$ 54,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				21,000
Goodwill plus Intangibles Acquired				33,900
Funding from Holdback Payments				6,900
Prudential Facility [Member]
Long-term Debt		$ 170,000		$ 120,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate				3.19%