Summary of Significant Accounting Policies (Detail) - USD ($)		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019
Class of Stock [Line Items]
Cash maturity period		3 months
Non-accrual status threshold		90 days
Charge off threshold		120 days
Operating lease assets	$ 95,200,000	$ 93,485,000	[1]
Lease liabilities	110,100,000	$ 112,344,000	[1]
Cumulative Effect on Retained Earnings, Net of Tax	$ 0
Minimum
Class of Stock [Line Items]
Property and equipment, estimated useful life		3 years
Maximum
Class of Stock [Line Items]
Property and equipment, estimated useful life		5 years

[1] The Company adopted ASU 2016-02, Leases, as of January 1, 2019, and has elected not to restate comparative periods presented in the consolidated financial statements. For additional information, see “Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies” and “Notes to Consolidated Financial Statements – Note 18. Leases.”