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Commitments and Contingent Liabilities - Narrative (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
May 10, 2019
USD ($)
Jan. 01, 2019
USD ($)
Mar. 31, 2020
Jun. 30, 2020
USD ($)
option
Dec. 31, 2019
USD ($)
Loss Contingencies          
Weighted average remaining lease term       32 years 3 months 18 days  
Renewal term 5 years        
Lessee, initial term 10 years        
Expenses related to operating lease commitments $ 900        
Investments in leases - operating   $ 11,100      
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]       us-gaap:OtherAssets us-gaap:OtherAssets
Lease liability   $ 11,100   $ 17,815 $ 17,738
Operating Lease, Liability, Statement of Financial Position [Extensible List]       us-gaap:OtherLiabilities us-gaap:OtherLiabilities
Finance lease, weighted average remaining lease term       35 years 9 months 18 days  
Accounting Standards Update [Extensible List]   us-gaap:AccountingStandardsUpdate201602Member us-gaap:AccountingStandardsUpdate201613Member    
Minimum          
Loss Contingencies          
Operating lease, discount rate (percent) 5.30%        
Lessee, finance lease, discount rate (percent)       6.00%  
Maximum          
Loss Contingencies          
Operating lease, discount rate (percent) 5.50%        
Lessee, finance lease, discount rate (percent)       7.00%  
Cascata Golf Course And Various Office In New Orleans And New York          
Loss Contingencies          
Weighted average remaining lease term       15 years 10 months 24 days  
Cascata Golf Course          
Loss Contingencies          
Number of extension options | option       3  
Renewal term       10 years