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Condensed Consolidated Statements of Shareholders' Investment Unaudited (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Class of Stock [Line Items]
Net income (loss) attributable to redeemable noncontrolling interest	$ 257	$ 1,880	$ 6	$ 377
Class A Non-Voting
Class of Stock [Line Items]
Cash dividends paid (in dollars per share)	$ 0.03	$ 0.07	$ 0.07	$ 0.07
Class B Voting
Class of Stock [Line Items]
Cash dividends paid (in dollars per share)	$ 0.03	$ 0.05	$ 0.05	$ 0.05

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Aggregate dividends declared during the period for each share of common stock outstanding.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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