XML 94 R79.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Jul. 01, 2018
Income Tax Disclosure [Line Items]        
Unrealized losses on securities available for sale $ 17,189,000 $ 2,857,000    
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax asset, income tax expense (benefit) 1,300,000      
Excise tax on real estate investment trust (REIT) dividend $ 0 1,945,000 $ 0  
Effective income tax rate reconciliation, change in enacted tax rate and excise tax on real estate investment trust dividend, amount   $ 602,000    
Statutory federal rate 21.00% 35.00% 35.00%  
Unrecognized tax benefits $ 0 $ 0    
Income tax penalties and interest expense $ 0 $ 0    
New Jersey Division of Taxation [Member] | State and Local Jurisdiction [Member]        
Income Tax Disclosure [Line Items]        
Unrealized losses on securities available for sale       $ 943,000