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Capitalized Software (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Capitalized Software      
Cost $ 74,325,000 $ 45,039,000  
Less: Accumulated amortization (11,195,000) (5,291,000)  
Capitalized Computer Software, Net, Total 63,130,000 39,748,000  
Capitalized software pledged to secure obligation under capital leases 12,192,000 1,017,000  
Software amortization expense 6,000,000 3,400,000 $ 1,600,000
Capitalized Software      
Capitalized Software      
Impairment of capitalized software $ 0 $ 0 $ 827,000