Annual report pursuant to Section 13 and 15(d)

Acquisition - Additional Information (Detail)

v3.10.0.1
Acquisition - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 27, 2016
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]      
Goodwill   $ 11,031 $ 11,031
Banc of California Leases Acquisition      
Business Acquisition [Line Items]      
Cash consideration paid $ 240,800    
Other tangible and intangible assets acquired 12,600    
Goodwill 11,000    
Lease Intangible Asset | Banc of California Leases Acquisition      
Business Acquisition [Line Items]      
Estimated fair value of acquired intangibles 228,200    
Third-party originators intangible      
Business Acquisition [Line Items]      
Intangible asset amortization period   7 years  
Third-party originators intangible | Banc of California Leases Acquisition      
Business Acquisition [Line Items]      
Estimated fair value of acquired intangibles $ 483    
Intangible asset amortization period 7 years