Acquisitions (Details) - USD ($) $ in Thousands		6 Months Ended
	Dec. 12, 2016	Dec. 31, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 113,845	$ 113,501
Houston Interests, LLC [Member]
Business Acquisition [Line Items]
Cash paid for equity interest	$ 46,000
Acquisition related adjustment for working capital settlement	6,837
Accounts Receivable	10,273
Costs and estimated earnings in excess of billings on uncompleted contracts	746
Other current assets	454
Current assets	21,804
Property, plant and equipment	942
Goodwill	35,146
Other intangible assets	10,220
Total assets acquired	68,112
Accounts payable	962
Billings on uncompleted contracts in excess of costs and estimated earnings	11,648
Other accrued expenses	2,475
Current liabilities	15,085
Other liabilities	190
Net assets acquired	52,837
Less: cash acquired	10,331
Business Combination, Consideration Transferred	$ 42,506
Warranty reserve working capital provision		2,600
Settlement of warranty reserve		$ 1,700