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Noncontrolling Interests - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Noncontrolling Interest [Abstract]          
Net income attributable to noncontrolling interests $ 0 $ 69,000 $ 6,000 $ 169,000  
Redeemable noncontrolling interests 0   0   $ 1,383,000
Noncontrolling interest included in permanent shareholders' equity $ 0   $ 0   $ 0