Overview and Basis of Presentation - Summary of Cash and Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 118,422	$ 127,246	$ 148,242	$ 128,697
Cash and Cash Equivalents and Restricted Cash	120,083	129,185	151,575	130,231
Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash included in "Other current assets"	438	568	1,960	149
Deferred Charges and Other Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash included in "Deferred charges and other assets"	$ 1,223	$ 1,371	$ 1,373	$ 1,385