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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Revenue, Major Customer [Line Items]

Computation Of Basic And Diluted Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted net income per share for the years ended December 31 (in thousands, except per share amounts):


		2020				2019				2018
Numerator:
Net income attributable to Vicor Corporation		$	17,910			$	14,098			$	31,725

Denominator:
Denominator for basic net income per share-weighted average shares (1)			42,186				40,330				39,872
Effect of dilutive securities:
Employee stock options (2)			1,683				1,347				857

Denominator for diluted net income per share-adjusted weighted-average shares and assumed conversions (3)			43,869				41,677				40,729

Basic net income per share		$	0.42			$	0.35			$	0.80

Diluted net income per share		$	0.41			$	0.34			$	0.78

(1)	Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding.

(2)	Options to purchase 181,196, 164,367 and 67,247 shares of Common Stock in 2020, 2019, and 2018, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive.

(3)	Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding for the year, adjusted to include the dilutive effect, if any, of outstanding options.