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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 127,737	$ 89,466	$ 381,341	$ 268,288
Cost of goods sold	80,285	58,015	244,500	174,226
Gross margin	47,452	31,451	136,841	94,062
Selling and administrative expenses	34,917	25,260	98,704	78,008
Other periodic pension cost	212	476	830	1,282
Interest expense	239	1,085	1,732	3,514
Income before taxes on income	12,084	4,630	35,575	11,258
Depreciation and amortization	2,013	2,128	5,972	6,339
Capital expenditures	818	1,445	5,711	6,424
Total assets	367,238	349,385	367,238	349,385	$ 358,933
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(1,309)	(1,278)	(3,834)	(3,575)
Cost of goods sold	(507)	(417)	(1,452)	(1,221)
Gross margin	(802)	(861)	(2,382)	(2,354)
Selling and administrative expenses	(802)	(861)	(2,382)	(2,354)
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
Uniforms and Related Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	73,234	54,979	209,178	174,403
Uniforms and Related Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	73,234	54,979	209,178	174,403
Cost of goods sold	48,715	35,263	135,324	112,561
Gross margin	24,519	19,716	73,854	61,842
Selling and administrative expenses	21,987	17,688	60,226	54,644
Other periodic pension cost	212	476	830	1,282
Interest expense	210	768	1,420	2,609
Income before taxes on income	2,110	784	11,378	3,307
Depreciation and amortization	1,430	1,537	4,291	4,607
Capital expenditures	319	1,038	4,771	5,193
Total assets	269,776	254,053	269,776	254,053
Remote Staffing Solutions [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	10,327	8,027	26,353	23,322
Remote Staffing Solutions [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	11,636	9,305	30,187	26,897
Cost of goods sold	4,653	3,542	12,880	10,926
Gross margin	6,983	5,763	17,307	15,971
Selling and administrative expenses	3,927	3,488	10,840	10,055
Other periodic pension cost	0	0	0	0
Interest expense	0	0	0	0
Income before taxes on income	3,056	2,275	6,467	5,916
Depreciation and amortization	243	240	657	745
Capital expenditures	404	276	750	881
Total assets	22,719	22,289	22,719	22,289
Remote Staffing Solutions [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(1,309)	(1,278)	(3,834)	(3,575)
Promotional Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	44,176	26,460	145,810	70,563
Promotional Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	44,176	26,460	145,810	70,563
Cost of goods sold	27,424	19,627	97,748	51,960
Gross margin	16,752	6,833	48,062	18,603
Selling and administrative expenses	9,805	4,945	30,020	15,663
Other periodic pension cost	0	0	0	0
Interest expense	29	317	312	905
Income before taxes on income	6,918	1,571	17,730	2,035
Depreciation and amortization	340	351	1,024	987
Capital expenditures	95	131	190	350
Total assets	$ 74,743	$ 73,043	$ 74,743	$ 73,043