Note 5 - Earnings Per Share (Details Textual) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares)		0		0
Stock Options and Restricted Stock [Member]
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares)		0		0