Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.8.0.1
Fair Value Measurements - Additional Information (Detail)
Mar. 31, 2018
USD ($)
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