Note 10 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Net sales	$ 123,326	$ 127,737	$ 394,960	$ 381,341
Cost of goods sold	77,512	80,285	252,945	244,500
Gross margin	45,814	47,452	142,015	136,841
Selling and administrative expenses	35,059	34,917	104,076	98,704
Other periodic pension cost	459	212	1,328	830
Interest expense	320	239	925	1,732
Income before taxes on income	9,976	12,084	28,741	35,575
Depreciation and amortization	2,346	2,013	6,719	5,972
Capital expenditures	3,129	818	14,455	5,711
Total assets	422,177	367,238	422,177	367,238	$ 393,924
Defined Benefit Plan, Termination Charge	0	0	6,945	0
Intersegment Eliminations [Member]
Net sales	(1,847)	(1,309)	(5,209)	(3,834)
Cost of goods sold	(843)	(507)	(2,291)	(1,452)
Gross margin	(1,004)	(802)	(2,918)	(2,382)
Selling and administrative expenses	(1,004)	(802)	(2,918)	(2,382)
Other periodic pension cost	0	0	0	0
Interest expense	0	0	0	0
Income before taxes on income	0	0	0	0
Depreciation and amortization	0	0	0	0
Capital expenditures	0	0	0	0
Total assets	0	0	0	0
Defined Benefit Plan, Termination Charge			0
Uniforms and Related Products [Member]
Net sales	61,890	73,234	200,651	209,178
Uniforms and Related Products [Member] | Operating Segments [Member]
Net sales	61,890	73,234	200,651	209,178
Cost of goods sold	39,708	48,715	131,730	135,324
Gross margin	22,182	24,519	68,921	73,854
Selling and administrative expenses	19,244	21,987	58,046	60,226
Other periodic pension cost	459	212	1,328	830
Interest expense	309	210	862	1,420
Income before taxes on income	2,170	2,110	1,740	11,378
Depreciation and amortization	1,487	1,430	4,373	4,291
Capital expenditures	1,214	319	11,125	4,771
Total assets	289,028	269,776	289,028	269,776
Defined Benefit Plan, Termination Charge			6,945
Remote Staffing Solutions [Member]
Net sales	16,193	10,327	41,514	26,353
Remote Staffing Solutions [Member] | Operating Segments [Member]
Net sales	18,040	11,636	46,723	30,187
Cost of goods sold	7,555	4,653	19,233	12,880
Gross margin	10,485	6,983	27,490	17,307
Selling and administrative expenses	6,576	3,927	16,860	10,840
Other periodic pension cost	0	0	0	0
Interest expense	0	0	0	0
Income before taxes on income	3,909	3,056	10,630	6,467
Depreciation and amortization	398	243	1,014	657
Capital expenditures	1,733	404	2,849	750
Total assets	28,062	22,719	28,062	22,719
Defined Benefit Plan, Termination Charge			0
Remote Staffing Solutions [Member] | Intersegment Eliminations [Member]
Net sales	(1,847)	(1,309)	(5,209)	(3,834)
Promotional Products [Member]
Net sales	45,243	44,176	152,795	145,810
Promotional Products [Member] | Operating Segments [Member]
Net sales	45,243	44,176	152,795	145,810
Cost of goods sold	31,092	27,424	104,273	97,748
Gross margin	14,151	16,752	48,522	48,062
Selling and administrative expenses	10,243	9,805	32,088	30,020
Other periodic pension cost	0	0	0	0
Interest expense	11	29	63	312
Income before taxes on income	3,897	6,918	16,371	17,730
Depreciation and amortization	461	340	1,332	1,024
Capital expenditures	182	95	481	190
Total assets	$ 105,087	$ 74,743	105,087	$ 74,743
Defined Benefit Plan, Termination Charge			$ 0