XML 87 R72.htm IDEA: XBRL DOCUMENT v3.8.0.1
PREMISES AND EQUIPMENT - Narrative (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 2,650 $ 2,311 $ 2,310
Property, Plant and Equipment [Line Items]      
Rent expense $ 639 601 $ 435
Furniture and equipment      
Property, Plant and Equipment [Line Items]      
Premises and equipment retired from active use   5,600  
Loss in connection with retirement of premises and equipment   $ 147