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Noncontrolling interests (Details) € in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Oct. 01, 2018 USD ($)	Jul. 02, 2018
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Change in Redemption Value			$ 5,493
Net Income (Loss) Attributable to Noncontrolling Interest	$ 426	$ 23	246		$ (332)
Proceeds from (Payments to) Noncontrolling Interests			(3,921)
Other Comprehensive (Income) Loss, Foreign Currency Translation Adjustment, Tax, Portion Attributable to Noncontrolling Interest			(794)
Redeemable noncontrolling interest [Member]
Noncontrolling Interest [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	68,201		68,201			$ 63,182
BuildASign LLC [Domain]
Noncontrolling Interest [Line Items]
Purchase of noncontrolling interests							$ (3,356)
Business Acquisition, Percentage of Voting Interests Acquired							99.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners							1.00%
VIDA Group Co. [Domain]
Noncontrolling Interest [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired								73.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners								27.00%
PrintBrothers [Member]
Noncontrolling Interest [Line Items]
Purchase of noncontrolling interests	$ (3,995)		(3,995)
Proceeds from Noncontrolling Interests			$ 57,046	€ 50,173
Minimum [Member] | PrintBrothers [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	12.00%		12.00%
Maximum [Member] | PrintBrothers [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	13.00%		13.00%

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