XML 45 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
LOANS AND ALLOWANCE FOR LOAN LOSSES - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
USD ($)
note
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]      
Amount of loan on which review have been made annually $ 500,000    
Amount of loan on which reviews may require approval 1,000,000    
Amount of loan on which reviews require approval $ 250,000    
Loans that are deemed impaired, number of days past due (more than) 90 days    
Number of notes split | note 2    
Appraisals, required period interval 18 months    
Minimum amount on which annual updated appraisals for classified loans is required $ 250,000    
Look-back period for historical losses 5 years 5 years 4 years
Maximum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Percentage of loan-to-value ratio upon loan origination 80.00%    
Percentage of loan-to-value ratios of the value of the real estate taken as collateral 90.00%    
Percentage of credit worthiness of the borrower 43.00%    
Percentage of strong loan-to-value 70.00%    
Historical loss percentage adjustment to anticipated loss allocation 1.50% 1.50%  
Minimum      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Historical loss percentage adjustment to anticipated loss allocation (1.50%) (1.50%)