Financial Instruments and Fair Value Disclosures - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trade receivables past due	$ 9,600
Trade receivables reserved for previous years	5,500
Trade receivables, less than 90 Days past due	4,100
Allowance for credit losses	$ 5,667	$ 5,459
Measurement period for determining fair value of debt instruments	10 days
ASU 2016-13
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimate of credit losses	$ 200