Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction (Detail)

v3.20.4
Revenue Recognition - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction (Detail)
$ in Thousands
Dec. 31, 2020
USD ($)
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 13,521
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 11,652
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 1,257
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 328
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 155
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 46
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Disaggregation of Revenue [Line Items]  
Revenue, Remaining Performance Obligation $ 83
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction 1 year