Acquisitions - Preliminary Purchase Price Allocation to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Aug. 15, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Nov. 21, 2014	Feb. 14, 2014
Assets
Goodwill		$ 464,714	$ 474,901	$ 490,738
Business Acquisition, Pro Forma Information [Abstract]
Net sales			1,807,513	1,902,429
Net income (loss)			$ 14,172	$ (120,420)
Earnings Per Share, Basic and Diluted [Abstract]
Basic			$ 0.22
Diluted				$ (1.94)
Cash and Cash Equivalents, at Carrying Value [Abstract]
Cash and cash equivalents-beginning		55,675	$ 27,533
Issuance of common stock	$ 160,750
Issuance of long-term debt, net	465,561
Settlement of Predecessor debt	(369,047)
Settlement of Predecessor equity and option holders	(244,240)
Settlement of transaction and other fees	(19,031)
Cash and cash equivalents-ending	16,646	44,769	55,675	$ 27,533
Predecessor
Cash and Cash Equivalents, at Carrying Value [Abstract]
Cash and cash equivalents-beginning	22,653			$ 27,123
AGI Shorewood
Assets
Cash and cash equivalents					$ 19,401
Accounts receivable					76,435
Inventories					32,851
Prepaid expenses and other current assets					6,142
Deferred income taxes					15,322
Property, plant and equipment					49,470
Other long-term assets					3,610
Less: Liabilities
Current liabilities					(62,869)
Other long-term liabilities					(6,568)
Purchase price					$ 133,794
Multi Packaging Solutions Inc [Member]
Assets
Cash and cash equivalents	16,646
Accounts receivable	70,985
Inventories	51,668
Prepaid expenses and other current assets	5,878
Deferred income taxes	3,438
Property, plant and equipment	147,845
Other long-term assets	4,588
Intangible assets	229,052
Goodwill	269,084
Less: Liabilities
Current liabilities	(70,122)
Other long-term liabilities	(8,635)
Deferred income taxes	(73,678)
Purchase price	$ 646,749
Chesapeake Finance 2, Ltd. ("CF2")
Assets
Cash and cash equivalents						$ 35,175
Accounts receivable						107,246
Inventories						90,001
Prepaid expenses and other current assets						16,532
Deferred income taxes						10,730
Property, plant and equipment						290,528
Other long-term assets						1,847
Intangible assets						261,748
Goodwill						201,632
Less: Liabilities
Current liabilities						(168,259)
Debt						(487,781)
Other long-term liabilities						(57,125)
Deferred income taxes						(28,015)
Purchase price						$ 274,259
CD Cartondruck AG
Cash and Cash Equivalents, at Carrying Value [Abstract]
Restricted cash			$ 1,985
Reduction of expense in connection with resolution of contingencies		$ 320