Condensed Consolidated Statements of Shareholders' Investment Unaudited (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Class of Stock [Line Items]
Net loss (income) attributable to redeemable noncontrolling interest			$ 257	$ 1,880
Class A Non-Voting
Class of Stock [Line Items]
Cash dividends paid (in dollars per share)	$ 0.06	$ 0.06	$ 0.03	$ 0.07
Class B Voting
Class of Stock [Line Items]
Cash dividends paid (in dollars per share)	$ 0.06	$ 0.06	$ 0.03	$ 0.05