Note 10 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Net sales	$ 130,787	$ 159,359	$ 271,634	$ 253,604
Cost of goods sold	83,629	103,421	175,433	164,215
Gross margin	47,158	55,938	96,201	89,389
Selling and administrative expenses	33,906	36,298	69,017	63,787
Other periodic pension cost	440	333	869	618
Defined Benefit Plan, Termination Charge	6,945	0	6,945	0
Interest expense	330	433	605	1,493
Income (loss) before taxes on income	5,537	18,874	18,765	23,491
Depreciation and amortization	2,156	2,090	4,373	3,959
Capital expenditures	4,590	2,820	11,326	4,893
Total assets	428,746	358,170	428,746	358,170	$ 393,924
Intersegment Eliminations [Member]
Net sales	(1,737)	(1,290)	(3,362)	(2,525)
Cost of goods sold	(760)	(480)	(1,448)	(945)
Gross margin	(977)	(810)	(1,914)	(1,580)
Selling and administrative expenses	(977)	(810)	(1,914)	(1,580)
Other periodic pension cost	0	0	0	0
Defined Benefit Plan, Termination Charge	0		0
Interest expense	0	0	0	0
Income (loss) 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]
Net sales	68,193	75,842	138,761	135,944
Uniforms and Related Products [Member] | Operating Segments [Member]
Net sales	68,193	75,842	138,761	135,944
Cost of goods sold	45,297	47,937	92,022	86,609
Gross margin	22,896	27,905	46,739	49,335
Selling and administrative expenses	18,420	20,014	38,802	38,239
Other periodic pension cost	440	333	869	618
Defined Benefit Plan, Termination Charge	6,945		6,945
Interest expense	292	338	553	1,210
Income (loss) before taxes on income	(3,201)	7,220	(430)	9,268
Depreciation and amortization	1,453	1,551	2,886	2,861
Capital expenditures	3,735	2,600	9,911	4,452
Total assets	290,774	252,503	290,774	252,503
Remote Staffing Solutions [Member]
Net sales	13,916	8,061	25,321	16,026
Remote Staffing Solutions [Member] | Operating Segments [Member]
Net sales	15,653	9,351	28,683	18,551
Cost of goods sold	6,369	4,239	11,678	8,227
Gross margin	9,284	5,112	17,005	10,324
Selling and administrative expenses	5,562	3,517	10,284	6,913
Other periodic pension cost	0	0	0	0
Defined Benefit Plan, Termination Charge	0		0
Interest expense	0	0	0	0
Income (loss) before taxes on income	3,722	1,595	6,721	3,411
Depreciation and amortization	322	197	616	414
Capital expenditures	709	180	1,116	346
Total assets	26,346	21,030	26,346	21,030
Remote Staffing Solutions [Member] | Intersegment Eliminations [Member]
Net sales	(1,737)	(1,290)	(3,362)	(2,525)
Promotional Products [Member]
Net sales	48,678	75,456	107,552	101,634
Promotional Products [Member] | Operating Segments [Member]
Net sales	48,678	75,456	107,552	101,634
Cost of goods sold	32,723	51,725	73,181	70,324
Gross margin	15,955	23,731	34,371	31,310
Selling and administrative expenses	10,901	13,577	21,845	20,215
Other periodic pension cost	0	0	0	0
Defined Benefit Plan, Termination Charge	0		0
Interest expense	38	95	52	283
Income (loss) before taxes on income	5,016	10,059	12,474	10,812
Depreciation and amortization	381	342	871	684
Capital expenditures	146	40	299	95
Total assets	$ 111,626	$ 84,637	$ 111,626	$ 84,637