Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Amortization of Capitalized Contract Cost [Table Text Block]

	2022		2021		2020
	(In thousands)
Direct expenses	$	146	$	157	$	272
Selling, general and administrative expenses	$	1,625	$	2,494	$	2,970
Total amortization	$	1,771	$	2,651	$	3,242

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

	Balance at Beginning of Year		Bad Debt Expense		Write-offs, net of Recoveries		Balance at End of Year
Year Ended December 31, 2020	$	144	$	46	$	70	$	120
Year Ended December 31, 2021	$	120	$	38	$	64	$	94
Year Ended December 31, 2022	$	94	$	19	$	48	$	65

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

	2022			2021			2020
	(In thousands)
Amounts charged against income, before income tax benefit	$	1,200		$	623		$	680
Amount of related income tax benefit		(436	)		(919	)		(6,764	)
Net (benefit) expense to net income	$	764		$	(296	)	$	(6,084	)

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

	Level 1		Level 2		Level 3		Total
	(In thousands)
As of December 31, 2022
Money Market Funds	$	24,927	$	—	$	—	$	24,927
Total Cash Equivalents	$	24,927	$	—	$	—	$	24,927
As of December 31, 2021
Money Market Funds	$	6,306	$	—	$	—	$	6,306
Total Cash Equivalents	$	6,306	$	—	$	—	$	6,306

	December 31, 2022		December 31, 2021
	(In thousands)
Total carrying amount of long-term debt	$	22,315	$	26,620
Estimated fair value of long-term debt	$	21,668	$	27,708

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

	2022			2021			2020
	(In thousands, except per share data)
Numerator for net income per share - basic:
Net income	$	31,800		$	37,466		$	37,260
Allocation of distributed and undistributed income to unvested restricted stock shareholders		(16	)		(18	)		(57	)
Net income attributable to common shareholders	$	31,784		$	37,448		$	37,203
Denominator for net income per share - basic:
Weighted average common shares outstanding – basic		24,922			25,422			25,170
Net income per share – basic	$	1.28		$	1.47		$	1.48
Numerator for net income per share - diluted:
Net income attributable to common shareholders for basic computation	$	31,784		$	37,448		$	37,203
Denominator for net income per share - diluted:
Weighted average common shares outstanding – basic		24,922			25,422			25,170
Weighted average effect of dilutive securities – stock options		130			218			526
Denominator for diluted earnings per share – adjusted weighted average shares		25,052			25,640			25,696
Net income per share – diluted	$	1.27		$	1.46		$	1.45