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Consolidated 50% Owned Subsidiaries - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
entity
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
entity
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Noncontrolling Interest [Line Items]          
Ownership interest in subsidiaries 50.00%   50.00%    
Number of entities | entity 2   2    
Members’ interest subject to mandatory redemption $ 40,000   $ 40,000   $ 40,000
Total disability insurance policies, per policy amount 20,000   20,000    
Myers          
Noncontrolling Interest [Line Items]          
Net accumulated earnings 4,600 $ 1,400 6,300 $ 2,700  
Variable Interest Entity, Primary Beneficiary | Myers          
Noncontrolling Interest [Line Items]          
Members’ interest subject to mandatory redemption $ 20,000   $ 20,000