Note 9 - 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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Net sales	$ 92,270	$ 82,392	$ 178,822	$ 155,479
Cost of goods sold	59,927	53,114	116,211	101,326
Gross margin	32,343	29,278	62,611	54,153
Selling and administrative expenses	26,885	23,327	52,748	44,509
Other periodic pension cost	547	96	806	192
Interest expense	1,259	758	2,429	1,035
Income before taxes on income	3,652	5,097	6,628	8,417
Depreciation and amortization	2,151	2,020	4,211	3,646
Capital expenditures	3,256	1,359	4,979	2,414
Total assets	347,012	335,162	347,012	335,162	$ 335,086
Intersegment Eliminations [Member]
Net sales	(1,212)	(1,026)	(2,297)	(2,039)
Cost of goods sold	(434)	(356)	(804)	(698)
Gross margin	(778)	(670)	(1,493)	(1,341)
Selling and administrative expenses	(778)	(670)	(1,493)	(1,341)
Other periodic pension cost
Interest expense
Income before taxes on income
Depreciation and amortization
Capital expenditures
Total assets	(64,810)	(53,743)	(64,810)	(53,743)
Uniforms and Related Products [Member] | Operating Segments [Member]
Net sales	60,745	56,403	119,424	104,528
Cost of goods sold	38,937	36,222	77,298	67,811
Gross margin	21,808	20,181	42,126	36,717
Selling and administrative expenses	18,779	17,399	36,956	31,538
Other periodic pension cost	547	96	806	192
Interest expense	963	495	1,841	555
Income before taxes on income	1,519	2,191	2,523	4,432
Depreciation and amortization	1,582	1,449	3,070	2,514
Capital expenditures	2,997	708	4,155	1,393
Total assets	287,690	303,099	287,690	303,099
Remote Staffing Solutions [Member] | Operating Segments [Member]
Net sales	8,993	8,001	17,592	15,300
Cost of goods sold	3,824	3,355	7,384	6,493
Gross margin	5,169	4,646	10,208	8,807
Selling and administrative expenses	3,448	2,778	6,567	5,290
Other periodic pension cost
Interest expense
Income before taxes on income	1,721	1,868	3,641	3,517
Depreciation and amortization	249	253	505	490
Capital expenditures	196	554	605	819
Total assets	29,161	25,664	29,161	25,664
Promotional Products [Member] | Operating Segments [Member]
Net sales	23,744	19,014	44,103	37,690
Cost of goods sold	17,600	13,893	32,333	27,720
Gross margin	6,144	5,121	11,770	9,970
Selling and administrative expenses	5,436	3,820	10,718	9,022
Other periodic pension cost
Interest expense	296	263	588	480
Income before taxes on income	412	1,038	464	468
Depreciation and amortization	320	318	636	642
Capital expenditures	63	97	219	202
Total assets	$ 94,971	$ 60,142	$ 94,971	$ 60,142