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Noncontrolling interests (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Jun. 06, 2019	Oct. 01, 2018
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest	$ 677	$ (180)
Document period end date	Sep. 30, 2020
Redeemable noncontrolling interest [Member]
Noncontrolling Interest [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	$ 71,209		$ 69,106
Other Comprehensive (Income) Loss, Foreign Currency Translation Adjustment, Tax, Portion Attributable to Noncontrolling Interest	$ 1,426
BuildASign LLC [Domain]
Noncontrolling Interest [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					99.00%
BuildASign LLC [Domain] | Redeemable noncontrolling interest [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners					1.00%
Minimum [Member] | PrintBrothers [Member] | Redeemable noncontrolling interest [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				12.00%
Maximum [Member] | PrintBrothers [Member] | Redeemable noncontrolling interest [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				13.00%

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