Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Amortization of Capitalized Contract Cost [Table Text Block]

	2023		2022		2021
	(In thousands)
Direct expenses	$	181	$	146	$	157
Selling, general and administrative expenses	$	1,161	$	1,625	$	2,494
Total amortization	$	1,342	$	1,771	$	2,651

Financing Receivable, Allowance for Credit Loss [Table Text Block]

	Balance at Beginning of Period		Bad Debt Expense		Write-offs		Recoveries		Balance at End of Period
Year Ended December 31, 2021	$	120	$	38	$	76	$	12	$	94
Year Ended December 31, 2022	$	94	$	19	$	50	$	2	$	65
Year Ended December 31, 2023	$	65	$	99	$	99	$	10	$	75

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

	2023			2022			2021
	(In thousands)
Amounts charged against income, before income tax benefit	$	935		$	1,200		$	623
Amount of related income tax benefit		(617	)		(436	)		(919	)
Net (benefit) expense to net income	$	318		$	764		$	(296	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Level 1		Level 2		Level 3		Total
	(In thousands)
As of December 31, 2023
Money Market Funds	$	6,471	$	—	$	—	$	6,471
Total Cash Equivalents	$	6,471	$	—	$	—	$	6,471
As of December 31, 2022
Money Market Funds	$	24,927	$	—	$	—	$	24,927
Total Cash Equivalents	$	24,927	$	—	$	—	$	24,927

	December 31, 2023		December 31, 2022
	(In thousands)
Total carrying amount of long-term debt	$	36,787	$	22,315
Estimated fair value of long-term debt	$	36,403	$	21,668

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	2023			2022			2021
	(In thousands, except per share data)
Numerator for net income per share – basic:
Net income	$	30,971		$	31,800		$	37,466
Allocation of distributed and undistributed income to unvested restricted stock shareholders		(8	)		(16	)		(18	)
Net income attributable to common shareholders	$	30,963		$	31,784		$	37,448
Denominator for net income per share – basic:
Weighted average common shares outstanding – basic		24,540			24,922			25,422
Net income per share – basic	$	1.26		$	1.28		$	1.47
Numerator for net income per share – diluted:
Net income attributable to common shareholders for basic computation	$	30,963		$	31,784		$	37,448
Denominator for net income per share – diluted:
Weighted average common shares outstanding – basic		24,540			24,922			25,422
Weighted average effect of dilutive securities – stock options		133			130			218
Denominator for diluted earnings per share – adjusted weighted average shares		24,673			25,052			25,640
Net income per share – diluted	$	1.25		$	1.27		$	1.46