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Commitments and Contingencies - Additional Information (Detail) € in Millions			3 Months Ended	12 Months Ended
	Dec. 30, 2016 EUR (€) shares	Sep. 21, 2015 shares	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Operating Leased Assets [Line Items]
Liability or related charge recorded for legal contingencies \| $			$ 0	$ 0
Senhance Surgical Robotic System Acquisition
Operating Leased Assets [Line Items]
Common shares issued (in shares) \| shares	286,360	1,195,647
Fair value of contingent consideration \| $			$ 2,100,000	$ 1,100,000
Senhance Surgical Robotic System Acquisition \| Second Tranche
Operating Leased Assets [Line Items]
Contingent consideration related to acquisition \| €	€ 5.0
Aggregate fair market value of common stock \| €	€ 5.0