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Summary of Significant Accounting Policies - Schedule of Impact of Adoption of ASU 2018-15 on Condensed Consolidated Statement of Income and Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Summary Of Significant Accounting Policy [Line Items]
Net income	$ (9,969)	$ 770
Net cash provided by operating activities	$ (24)	9,712
ASU 2018-15 [Member]
Summary Of Significant Accounting Policy [Line Items]
Net income		770
Net cash provided by operating activities		9,712
Pre-Adoption [Member]
Summary Of Significant Accounting Policy [Line Items]
Net income		770
Net cash provided by operating activities		$ 9,712

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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