XML 90 R74.htm IDEA: XBRL DOCUMENT v3.6.0.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Loss Contingencies [Line Items]        
Lease expiration date   Jan. 01, 2030    
Minimum sublease rental income   $ 4,322,000 $ 4,673,000 $ 2,636,000
Letters of credit outstanding $ 50,900,000 50,900,000    
Accrued loan loss 28,200,000 28,200,000 21,800,000  
Assets available for recourse 798,800,000 798,800,000    
Warehouse receivables 588,500,000 $ 588,500,000    
Letters of credit expiration date   2017-11    
Guarantees total $ 56,600,000 $ 56,600,000    
Guarantees expiration date 2018-12      
Commitments to investment in future real estate investment $ 31,600,000 31,600,000    
Commitments to investment in unconsolidated real estate subsidiary 23,000,000 23,000,000    
Funded loans subject to loss sharing arrangements [Member]        
Loss Contingencies [Line Items]        
Funded loans unpaid principal 16,600,000,000 16,600,000,000    
Funded loans not subject to loss sharing arrangements [Member]        
Loss Contingencies [Line Items]        
Letters of credit outstanding $ 45,000,000 45,000,000 $ 35,000,000  
Minimum [Member]        
Loss Contingencies [Line Items]        
Minimum sublease rental income   $ 9,300,000    
Maximum [Member]        
Loss Contingencies [Line Items]        
Co-investments typically range   2.00%