Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 26, 2020	$ 853,559	$ 322	$ 64,085	$ 789,152
Beginning Balance, Shares at Dec. 26, 2020		32,168,740
Exercise of stock options	736		736
Exercise of stock options, shares		17,346
Compensation expense under Incentive Stock Plan	4,491		4,491
Purchase and cancellation of common stock	(31,249)	$ (3)	(549)	(30,697)
Purchase and cancellation of common stock, Shares		(305,031)
Issuance of non-vested stock, net of cancellations	2,493		2,493
Issuance of non-vested stock, net of cancellations, Shares		20,521
Other stock-related activity, net of tax	(1,393)		691	(2,084)
Other stock related activity, net of tax, Shares		(9,686)
Net income	64,348			64,348
Ending Balance at Jun. 26, 2021	892,985	$ 319	71,947	820,719
Ending Balance, Shares at Jun. 26, 2021		31,891,890
Beginning Balance at Mar. 27, 2021	883,811	$ 321	67,596	815,894
Beginning Balance, Shares at Mar. 27, 2021		32,115,528
Exercise of stock options	420		420
Exercise of stock options, shares		5,732
Compensation expense under Incentive Stock Plan	2,380		2,380
Purchase and cancellation of common stock	(27,275)	$ (2)	(480)	(26,793)
Purchase and cancellation of common stock, Shares		(266,871)
Issuance of non-vested stock, net of cancellations	2,493		2,493
Issuance of non-vested stock, net of cancellations, Shares		38,120
Other stock-related activity, net of tax	(462)		(462)
Other stock related activity, net of tax, Shares		(619)
Net income	31,618			31,618
Ending Balance at Jun. 26, 2021	892,985	$ 319	71,947	820,719
Ending Balance, Shares at Jun. 26, 2021		31,891,890
Beginning Balance at Dec. 25, 2021	$ 932,736	$ 316	77,451	856,409	$ (1,440)
Beginning Balance, Shares at Dec. 25, 2021	31,607,509	31,607,509
Exercise of stock options	$ 957		957
Exercise of stock options, shares		17,286
Compensation expense under Incentive Stock Plan	4,270		4,270
Purchase and cancellation of common stock	(18,195)	$ (2)	(336)	(17,857)
Purchase and cancellation of common stock, Shares		(186,435)
Issuance of non-vested stock, net of cancellations	377		377
Issuance of non-vested stock, net of cancellations, Shares		4,221
Other stock-related activity, net of tax	(1,997)		(527)	(1,470)
Other stock related activity, net of tax, Shares		(17,357)
Other comprehensive income	(303)				(303)
Net income	73,112			73,112
Ending Balance at Jun. 25, 2022	$ 990,957	$ 314	82,192	910,194	(1,743)
Ending Balance, Shares at Jun. 25, 2022	31,425,224	31,425,224
Beginning Balance at Mar. 26, 2022	$ 959,400	$ 315	78,906	879,923	256
Beginning Balance, Shares at Mar. 26, 2022		31,479,916
Exercise of stock options	957		957
Exercise of stock options, shares		14,808
Compensation expense under Incentive Stock Plan	2,118		2,118
Purchase and cancellation of common stock	(7,278)	$ (1)	(136)	(7,141)
Purchase and cancellation of common stock, Shares		(75,321)
Issuance of non-vested stock, net of cancellations, Shares		6,732
Other stock-related activity, net of tax	(146)		347	(493)
Other stock related activity, net of tax, Shares		(911)
Other comprehensive income	(1,999)				(1,999)
Net income	37,905			37,905
Ending Balance at Jun. 25, 2022	$ 990,957	$ 314	$ 82,192	$ 910,194	$ (1,743)
Ending Balance, Shares at Jun. 25, 2022	31,425,224	31,425,224