XML 74 R58.htm IDEA: XBRL DOCUMENT v3.19.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
 6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Loss Contingencies [Line Items]    
Letters of credit outstanding $ 78,300,000  
Accrued loan loss 41,800,000 $ 37,900,000
Assets available for recourse $ 748,900,000  
Letters of credit expiration date 2020-06  
Guarantees total $ 58,400,000  
Commitments to investment in future real estate investment 73,000,000.0  
Commitments to investment in unconsolidated real estate subsidiary $ 48,500,000  
Maximum [Member]    
Loss Contingencies [Line Items]    
Co-investments typically range 2.00%  
Funded loans subject to loss sharing arrangements [Member]    
Loss Contingencies [Line Items]    
Funded loans unpaid principal $ 25,900,000,000  
Letters of credit outstanding 67,000,000.0 64,000,000.0
SBL Program [Member]    
Loss Contingencies [Line Items]    
Letters of credit outstanding 5,000,000.0 $ 5,000,000.0
Funded loans not subject to loss sharing arrangements [Member]    
Loss Contingencies [Line Items]    
Letters of credit outstanding 72,000,000.0  
Warehouse Receivable [Member]    
Loss Contingencies [Line Items]    
Warehouse receivables $ 485,700,000