Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.5.0.2
Fair Value Measurements - Additional Information (Detail) - USD ($)
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Loans held for sale $ 12,833,000 $ 2,583,000 $ 2,874,000 $ 4,158,000 $ 8,677,000 $ 5,451,000
Minimum [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Unpaid principal balance of Non-accrual Non-PCI loans reviewed individually for amount of impairment 100,000          
Maximum [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Unpaid principal balance of Non-accrual Non-PCI loans reviewed collectively for amount of impairment 100,000          
Fair Value, Inputs, Level 2 [Member] | Non-recurring Basis [Member] | Non-Performing Loans Held for Sale [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Loans held for sale 0   0      
Fair Value, Inputs, Level 2 [Member] | Non-recurring Basis [Member] | Small Business Administration Loans Held for Sale [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Loans held for sale $ 12,800,000   $ 2,900,000