Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Summary of Other Intangible Assets (Detail)

v3.10.0.1
Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]    
Accumulated amortization $ (1,545) $ (1,183)
Goodwill 11,031 11,031
Gross carrying amount 13,727 13,727
Net carrying amount $ 12,182 12,544
Core deposit intangible    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible asset amortization period 10 years  
Gross carrying amount, excluding goodwill $ 2,213 2,213
Accumulated amortization (1,360) (1,119)
Net carrying amount, excluding goodwill $ 853 1,094
Third-party originators intangible    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible asset amortization period 7 years  
Gross carrying amount, excluding goodwill $ 483 483
Accumulated amortization (185) (64)
Net carrying amount, excluding goodwill $ 298 $ 419