Note 10 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	March 31, 2024				March 31, 2023
	Unrecognized Compensation Expense (in thousands)		Expected Weighted Average Period to be Recognized (years)		Unrecognized Compensation Expense (in thousands)		Expected Weighted Average Period to be Recognized (years)
Stock Options		-		-		-		-
Restricted Stock Units		2,231		2.3		4,977		2.2
Phantom Stock Units		7,535		2.0		9,222		2.1
Total		9,766		4.3		14,199		4.3

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Options
Options outstanding as of December 31, 2023		1,158,202
Granted		-
Exercised		7,773
Canceled or forfeited		-
Options outstanding as of March 31, 2024		1,150,429
Options exercisable as of March 31, 2024		1,150,429

Nonvested Restricted Stock Shares Activity [Table Text Block]

	Shares Outstanding
Restricted Stock Units Outstanding as of December 31, 2023		1,403,454
Granted		53,712
Vested		348,728
Canceled or forfeited		1,550
Restricted Stock Units Outstanding as of March 31, 2024		1,106,888

Phantom Share Units (PSUs) [Member]

Notes Tables

Schedule of Nonvested Share Activity [Table Text Block]

	Shares Outstanding
Phantom Stock Outstanding as of December 31, 2023		3,316,062
Granted		-
Vested		344,454
Canceled or forfeited		25,464
Phantom stock outstanding as of March 31, 2024		2,946,144