XML 44 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1

Stock-Based Compensation and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Stock-Based Compensation Expense

Stock-based compensation expense for the years ended December 31 was as follows (in thousands):
 

		2018				2017				2016
Cost of revenues		$	237			$	187			$	95
Selling, general and administrative			2,517				1,125				412
Research and development			642				423				(1	)
Total stock-based compensation		$	3,396			$	1,735			$	506

Summary of Compensation Expense by Type of Award

Compensation expense by type of award for the years ended December 31 was as follows (in thousands):
 

		2018				2017				2016
Stock options		$	2,649			$	1,546			$	506
ESPP			747				189				—
Total stock-based compensation		$	3,396			$	1,735			$	506

Weighted-Average Assumptions for Non Performance-Based Fair Value for Stock Options

The fair value for non performance-based stock options awarded for the years shown below was estimated at the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions:
 

Vicor:			2018				2017				2016
Risk-free interest rate			2.9	%			2.1	%			1.5	%
Expected dividend yield			—				—				—
Expected volatility			44	%			43	%			45	%
Expected lives (years)			6.4				7.1				7.2

VI Chip:		2018				2017				2016
Risk-free interest rate			N/A				1.9	%			1.7	%
Expected dividend yield			—				—				—
Expected volatility			N/A				32	%			34	%
Expected lives (years)			N/A				6.5				6.5

2000 Plan, Vicor [Member]

Stock-Based Compensation Expense

A summary of the activity under the 2000 Plan as of December 31, 2018 and changes during the year then ended, is presented below (in thousands except for share and weighted-average data):
 

		Options Outstanding				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life in Years				Aggregate Intrinsic Value
Outstanding on December 31, 2017			1,365,917			$	9.63
Granted			684,077			$	18.40
Forfeited and expired			(25,923	)		$	16.08
Exercised			(641,090	)		$	10.58
Outstanding on December 31, 2018			1,382,981			$	13.41				5.40			$	34,329
Exercisable on December 31, 2018			888,257			$	8.93				4.46			$	25,635
Vested or expected to vest as of December 31, 2018 (1)			1,345,938			$	13.07				5.34			$	33,820

(1) In addition to the vested options, the Company expects a portion of the unvested options to vest at some point in the future. The number of options expected to vest is calculated by applying an estimated forfeiture rate to the unvested options.

Picor Plan [Member]

Stock-Based Compensation Expense

A summary of the activity under the 2001 Picor Plan as of May 30, 2018, the date of the merger with and into Vicor, and changes during the period then ended, is presented below:
 

		Options Outstanding				Weighted- Average Exercise Price
Outstanding on December 31, 2017			10,065,987			$	0.62
Granted			—
Forfeited and expired			—
Exercised			—
Options transferred in merger with Vicor			(10,065,987	)		$	1.91
Outstanding on May 30, 2018			—

Vi Chip Plan [Member]

Stock-Based Compensation Expense

A summary of the activity under the 2007 VI Chip Plan as of December 31, 2018 and changes during the year then ended, is presented below (in thousands except for share and weighted-average data):
 

		Options Outstanding				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life in Years				Aggregate Intrinsic Value
Outstanding on December 31, 2017			13,092,250			$	0.97
Granted			—			$	—
Forfeited and expired			(2,678,250	)		$	1.00
Exercised			—			$	—
Outstanding on December 31, 2018 (1)			10,414,000			$	0.96				5.39			$	—
Exercisable on December 31, 2018			2,743,400			$	0.97				5.04			$	—
Vested or expected to vest as of December 31, 2018 (2)			9,853,685			$	0.96				5.38			$	—

(1) Of the total VI Chip options outstanding on December 31, 2018, 5,500,000 options had been granted to Dr. Vinciarelli, the Company’s Chief Executive Officer.

(2) In addition to the vested options, the Company expects a portion of the unvested options to vest at some point in the future. Options expected to vest is calculated by applying an estimated forfeiture rate to the unvested options.

X

- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_TwoThousandPlanVicorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_PicorPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_ViChipPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: