Share-based Compensation Arrangement by Share-based Payment Award, Options, Converted in Period

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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- Definition

Amount of noncash expense for share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Amount of cash paid to settle liability for award under share-based payment arrangement.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018	Apr. 23, 2020	May 01, 2019	Apr. 26, 2019
Defined Benefit Plan Disclosure
Authorized (in shares)	900,000
IXYS converted awards (in shares)	499,027
Allocated share based compensation	$ 19,100	$ 19,900	$ 28,200
Stock compensation expense	18,129	19,046	27,431
Options intrinsic value	20,600	12,500	38,300
Fair value of shares other than options vested	9,500	15,500	20,800
Share-based liabilities paid	500	900	1,100
Unrecognized compensation cost	$ 22,600
Unrecognized compensation cost, period for recognition (years)	2 years
Income tax benefit	$ 3,100	$ 3,300	$ 6,000
Purchase of common stock (in shares)	175,110	579,916	391,972
Repurchases of common stock	$ 22,927	$ 95,036	$ 67,908
2018 Share Repurchase Program
Defined Benefit Plan Disclosure
Share repurchase program authorized (in shares)					1,000,000
2019 Share Repurchase Program
Defined Benefit Plan Disclosure
Share repurchase program authorized (in shares)						1,000,000
2020 Share Repurchase Program
Defined Benefit Plan Disclosure
Share repurchase program authorized (in shares)	1,000,000			1,000,000
Options
Defined Benefit Plan Disclosure
Award vesting period	4 years
IXYS Corporation
Defined Benefit Plan Disclosure
Stock compensation expense			4,500
IXYS Corporation \| Options
Defined Benefit Plan Disclosure
Allocated share based compensation			$ 11,900
Minimum \| Options
Defined Benefit Plan Disclosure
Award vesting period	3 years
Award expiration period	7 years
Minimum \| Non-vested restricted share and share unit awards
Defined Benefit Plan Disclosure
Award vesting period	3 years
Maximum \| Options
Defined Benefit Plan Disclosure
Award vesting period	5 years
Award expiration period	10 years
Maximum \| Non-vested restricted share and share unit awards
Defined Benefit Plan Disclosure
Award vesting period	4 years