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Stockholders’ Equity and Stock-Based Compensation (Tables)

6 Months Ended

Jun. 25, 2022

Equity [Abstract]

Schedule of Restricted Stock Unit Activity

Restricted stock unit (“RSU”) activity under our equity incentive plan was as follows:

			Units						Weighted Average Grant Date Fair Value
RSUs at December 25, 2021			2,166,934						$	28.63
Awards granted			63,697						41.25
Awards vested			(338,825)						16.73
Awards forfeited			(51,941)						30.23
RSUs at June 25, 2022			1,839,865						31.22

Schedule of ESPP Activity

Information related to activity under our Employee Stock Purchase Plan (“ESPP”) was as follows:

						Six Months Ended
						June 25, 2022
Shares issued						157,642
Weighted average per share purchase price						$	35.81
Weighted average per share discount from the fair value of our common stock on the date of issuance						$	(6.93)

Schedule of Stock-based Compensation

Stock-based compensation was included in our Condensed Consolidated Statements of Income as follows (in thousands):

			Three Months Ended												Six Months Ended
			June 25, 2022						June 26, 2021						June 25, 2022						June 26, 2021
Cost of revenues			$	734					$	1,079					$	1,812					$	2,414
Research and development			1,695						1,663						3,681						3,352
Selling, general and administrative			3,929						3,846						8,385						7,899
Total stock-based compensation			$	6,358					$	6,588					$	13,878					$	13,665

Schedule of Unrecognized Stock-based Compensation

At June 25, 2022, the unrecognized stock-based compensation was as follows (dollars in thousands): 

			Unrecognized Expense						Average Expected Recognition Period in Years
Restricted stock units			$	27,430					1.80
Performance restricted stock units			7,202						1.74
Employee stock purchase plan			285						0.61
Total unrecognized stock-based compensation expense			$	34,917					1.77

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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