Note A - Overview and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Year Ended December 31,
In thousands	2022		2021
Revenue (1)
United States	$	183,470	$	175,437
Other countries		22,808		19,159
Total revenue	$	206,278	$	194,596

	December 31,
In thousands	2022		2021
Property, plant and equipment, net (2)
United States	$	10,219	$	7,549
Other countries		304		198
Total property, plant and equipment	$	10,523	$	7,747

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Year Ended December 31,
In thousands	2022	2021
Top ten customers	50.6%	53.0%
Top twenty-five customers	72.5%	72.6%

Schedule of Allowance for Doubtful Accounts [Table Text Block]

	Year Ended December 31,
In thousands	2022			2021
Balance at beginning of year	$	266		$	241
Net charges to expense		(92	)		95
Amounts recovered against the allowance		(11	)		(70	)
Balance at end of year	$	163		$	266

Property, Plant and Equipment [Table Text Block]

	Years
Buildings and improvements	3 to 40
Software	2 to 10
Equipment and furniture	3 to 20