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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Goodwill [Line Items]    
Changes in goodwill   $ 0
Customer Related Intangible Assets [Member]    
Goodwill [Line Items]    
Intangible assets, useful life   12 months
Intangible assets, amortization method   straight-line basis
Intangible assets, amortization expense $ 92,000 $ 229,000