Note 16 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 526,697	$ 376,701	$ 346,350
Cost of goods sold	337,932	247,772	224,653
Gross margin	188,765	128,929	121,697
Selling, General and Administrative Expense, Total	136,515	107,282	96,710
Other periodic pension cost	955	1,962	385
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	2,164	0	0
Interest expense	2,003	4,399	3,207
Income before taxes on income	51,456	15,286	21,395
Depreciation and amortization	8,132	8,272	7,906
Capital expenditures	11,857	9,672	4,869
Total assets	393,924	358,933	335,086
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(5,157)	(4,854)	(4,039)
Cost of goods sold	(1,950)	(1,714)	(1,430)
Gross margin	(3,207)	(3,140)	(2,609)
Selling, General and Administrative Expense, Total	(3,207)	(3,140)	(2,609)
Other periodic pension cost	0	0	0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	0
Interest expense	0	0	0
Income before taxes on income	0	0	0
Depreciation and amortization	0	0	0
Capital expenditures	0	0	0
Total assets	0	0	0
Uniforms and Related Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	287,333	237,554	238,165
Uniforms and Related Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	287,333	237,554	238,165
Cost of goods sold	187,364	155,283	154,437
Gross margin	99,969	82,271	83,728
Selling, General and Administrative Expense, Total	83,005	73,003	68,848
Other periodic pension cost	955	1,962	385
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	2,164
Interest expense	1,699	3,178	2,019
Income before taxes on income	16,474	4,128	12,476
Depreciation and amortization	5,845	5,975	5,611
Capital expenditures	9,988	8,150	2,794
Total assets	283,708	258,916	254,138
Remote Staffing Solutions [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	37,208	31,636	27,272
Remote Staffing Solutions [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	42,365	36,490	31,311
Cost of goods sold	18,032	15,066	13,404
Gross margin	24,333	21,424	17,907
Selling, General and Administrative Expense, Total	15,294	13,642	11,160
Other periodic pension cost	0	0	0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	0
Interest expense	0	0	0
Income before taxes on income	9,039	7,782	6,747
Depreciation and amortization	923	963	990
Capital expenditures	1,578	1,095	1,581
Total assets	21,799	23,970	19,717
Remote Staffing Solutions [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(5,157)	(4,854)	(4,039)
Promotional Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	202,156	107,511	80,913
Promotional Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	202,156	107,511	80,913
Cost of goods sold	134,486	79,137	58,242
Gross margin	67,670	28,374	22,671
Selling, General and Administrative Expense, Total	41,423	23,777	19,311
Other periodic pension cost	0	0	0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	0
Interest expense	304	1,221	1,188
Income before taxes on income	25,943	3,376	2,172
Depreciation and amortization	1,364	1,334	1,299
Capital expenditures	291	427	494
Total assets	$ 88,417	$ 76,047	$ 61,231