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Consolidated 50% Owned Subsidiaries Consolidated 50% Owned Subsidiaries - Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Variable Interest Entity [Line Items]
Operating income	$ 22,755	$ 12,103
Net income	10,555	3,115
Variable Interest Entity, Primary Beneficiary | Myers
Variable Interest Entity [Line Items]
Revenues	27,957	44,362
Operating income	718	155
Net income	$ 352	$ 79

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