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Accumulated other comprehensive income (loss) - Summary of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Ending Balance $ (32,226) $ 45,438  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning Balance     $ 0
Other comprehensive loss before reclassifications (67,659) (10,750) (4,568)
Amount reclassified from AOCI (10,005) 56,762 3,994
Net accumulated other comprehensive loss (77,664) 46,012 (574)
Ending Balance $ (32,226) $ 45,438 $ (574)