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Note 12 - Stockholders' Equity and Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Jun. 26, 2023	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement, Expense		$ 1.2	$ 1.1
Common Stock, Par or Stated Value Per Share (in dollars per share)		$ 0.001			$ 0.001
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)		0	0
Stock Appreciation Rights (SARs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	685,437
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 10.00
Stock Issued During Period, Value, New Issues	$ 0.1
Restricted Stock Units (RSUs) [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)		58,762	588,671
Participant [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Grant Limit (in shares)		2,000,000
Non Employee Board Member [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Grant Limit (in shares)		100,000
Amended And Restated2019 Long Term Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)		5,500,000		4,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)		1,500,000

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