Note C - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total Revenues	$ 49,597	$ 47,702	$ 142,610	$ 129,825
Marketing Services [Member]
Total Revenues	14,729	15,217	41,815	41,682
Customer Care [Member]
Total Revenues	19,768	17,933	55,503	41,640
Fulfillment and Logistics Services [Member]
Total Revenues	15,100	14,552	45,292	46,503
Transferred over Time [Member]
Total Revenues	45,758	43,915	131,355	119,002
Transferred over Time [Member] | Marketing Services [Member]
Total Revenues	12,628	13,177	36,163	38,103
Transferred over Time [Member] | Customer Care [Member]
Total Revenues	19,768	17,933	55,503	41,640
Transferred over Time [Member] | Fulfillment and Logistics Services [Member]
Total Revenues	13,362	12,805	39,689	39,259
Transferred at Point in Time [Member]
Total Revenues	3,839	3,787	11,255	10,823
Transferred at Point in Time [Member] | Marketing Services [Member]
Total Revenues	2,101	2,040	5,652	3,579
Transferred at Point in Time [Member] | Customer Care [Member]
Total Revenues	0	0	0	0
Transferred at Point in Time [Member] | Fulfillment and Logistics Services [Member]
Total Revenues	$ 1,738	$ 1,747	$ 5,603	$ 7,244