Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

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

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

	2016			2015		2014
Numerator:
Net income (loss) attributable to Vicor Corporation	$	(6,247	)	$	4,927	$	(13,887	)
Denominator:
Denominator for basic net income (loss) per share-weighted average shares (1)		38,842			38,754		38,569
Effect of dilutive securities:
Employee stock options (2)		—			392		—
Denominator for diluted net income (loss) per share-adjusted weighted-average shares and assumed conversions (3)		38,842			39,146		38,569
Basic net income (loss) per share	$	(0.16	)	$	0.13	$	(0.36	)
Diluted net income (loss) per share	$	(0.16	)	$	0.13	$	(0.36	)

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

(2) Options to purchase 1,696,222, 238,792, and 1,895,675 shares of Common Stock in 2016, 2015, and 2014, respectively, were not included in the calculation of net income (loss) 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.