Quarterly report pursuant to Section 13 or 15(d)

Commercial Real Estate Assets by Geographic Location (Details)

v3.5.0.2
Commercial Real Estate Assets by Geographic Location (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 926,377 $ 744,259 $ 660,953 $ 45,605 $ 45,556 $ 0
Loans and Leases Receivable, Percentage of Total, Commercial 100.00%   100.00%      
United States, Western Region [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 180,644   $ 131,488      
Loans and Leases Receivable, Percentage of Total, Commercial 19.50%   19.90%      
United States, Southeastern Region [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 81,353   $ 79,118      
Loans and Leases Receivable, Percentage of Total, Commercial 8.80%   12.00%      
United States, Southwestern Region [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 202,134   $ 161,721      
Loans and Leases Receivable, Percentage of Total, Commercial 21.80%   24.40%      
United States, Northeastern Region [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 396,728   $ 238,913      
Loans and Leases Receivable, Percentage of Total, Commercial 42.80%   36.20%      
United States, Midwestern Region [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Commercial real estate assets $ 65,518   $ 49,713      
Loans and Leases Receivable, Percentage of Total, Commercial 7.10%   7.50%