Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		11,728,212
Beginning balance at Dec. 31, 2020	$ 329,334	$ 117	$ 97,090	$ 241,727	$ (9,600)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	6,695			6,695
Other comprehensive income, net of tax	245				245
Employee stock purchase plan (in shares)		31,580
Employee stock purchase plan	1,558		1,558
Stock options exercised (in shares)		17,872
Stock options exercised	610		610
Stock awards vested (in shares)		178,827
Stock awards vested	0	$ 2	(2)
Stock repurchased related to the exercise of stock options and stock awards vested (in shares)		(106,894)
Stock repurchased related to the exercise of stock options and stock awards vested	(6,005)	$ (1)	(6,004)
Stock-based compensation	3,133		3,133
Ending balance (in shares) at Apr. 03, 2021		11,849,597
Ending balance at Apr. 03, 2021	335,570	$ 118	96,385	248,422	(9,355)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		11,849,597
Beginning balance (in shares)		11,925,087
Beginning balance at Dec. 31, 2021	474,602	$ 119	104,253	377,263	(7,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	8,099			8,099
Other comprehensive income, net of tax	5,013				5,013
Employee stock purchase plan (in shares)		31,686
Employee stock purchase plan	1,386		1,386
Stock options exercised (in shares)		48,119
Stock options exercised	1,445	$ 1	1,444
Stock awards vested (in shares)		117,387
Stock awards vested	0	$ 1	(1)
Stock repurchased related to the exercise of stock options and stock awards vested (in shares)		(89,334)
Stock repurchased related to the exercise of stock options and stock awards vested	(4,429)	$ (1)	(4,428)
Stock-based compensation	1,590		1,590
Ending balance (in shares) at Apr. 02, 2022		12,032,945
Ending balance at Apr. 02, 2022	$ 487,706	$ 120	$ 104,244	$ 385,362	$ (2,020)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		12,032,945