Stock-Based Compensation and Employee Benefit Plans - Summary of the Activity under the Picor Stock Option Plans (Detail) - Picor Plan [Member]	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Options Outstanding, Beginning balance	10,065,987
Options Outstanding, Granted	0
Options Outstanding, Forfeited and expired	0
Options Outstanding, Exercised	0
Options transferred in merger with Vicor	(10,065,987)
Options Outstanding, Ending balance	0
Weighted Average Exercise Price, Beginning balance | $ / shares	$ 0.62
Options transferred in merger with Vicor Weighted Average Exercise Price | $ / shares	$ 1.91