Markforged Holding Corporation Quarterly report pursuant to Section 13 or 15(d)

Equity Based Awards - Summary of Stock-based Compensation based on Awards Granted (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense for restricted stock units and options	$ 5,286	$ 8,424	$ 15,620	$ 11,395
Employee Stock Option [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense for restricted stock units and options	784	1,048	2,727	3,430
Restricted Stock Units
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense for restricted stock units and options	3,989	1,755	10,336	2,344
Restricted Stock Units And Options
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense for restricted stock units and options	$ 4,773	$ 2,803	$ 13,063	$ 5,774