Leases - Schedule of Maturity Analysis of Undiscounted Cash Flows of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating lease payments due:
Within one year	$ 8,380
After one but within two years	7,165
After two but within three years	5,667
After three but within four years	4,823
After four years but within five years	3,932
After five years	9,401
Total undiscounted cash flows	39,368
Discount on cash flows	(4,200)
Total operating lease liabilities	$ 35,168	$ 34,485