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Acquisitions - Estimated fair value of the assets acquired and liabilities (Details) - USD ($) $ in Thousands	Oct. 15, 2018	Jul. 06, 2017	Dec. 31, 2018	Jun. 30, 2018
Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
Goodwill			$ 51,410	$ 32,230
Pursuit
Consideration:
Cash consideration paid	$ 100,073
Fair value of total consideration transferred	100,073
Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
Inventories	8,332
Other current assets	373
Property, plant and equipment	17,454
Identifiable intangible assets	57,900
Current liabilities	(3,488)
Fair value of assets acquired and liabilities assumed	80,571
Goodwill	19,502
Total purchase price	$ 100,073
Cobalt Boats, LLC
Consideration:
Cash consideration paid		$ 129,525
Equity consideration paid		1,000
Fair value of total consideration transferred		130,525
Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
Inventories		14,343
Other current assets		363
Property, plant and equipment		12,934
Identifiable intangible assets		89,900
Current liabilities		(13,108)
Cash		3,973
Accounts receivable		2,329
Fair value of assets acquired and liabilities assumed		110,734
Goodwill		19,791
Total purchase price		$ 130,525