Note 9 - 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, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018		Dec. 31, 2018
Net sales	$ 89,466	$ 95,870		$ 268,288	$ 251,349
Cost of goods sold	58,015	62,070		174,226	163,396
Gross margin	31,451	33,800		94,062	87,953
Selling and administrative expenses	25,260	25,482		78,008	69,991
Other periodic pension cost	476	96		1,282	289
Interest expense	1,085	940		3,514	1,974
Income before taxes on income	4,630	7,282		11,258	15,699
Depreciation and amortization	2,128	2,099		6,339	5,745
Capital expenditures	1,445	1,467		6,424	3,881
Total assets	349,385	335,030	[1]	349,385	335,030	[1]	$ 335,086
Intersegment Eliminations [Member]
Net sales	(1,278)	(1,026)		(3,575)	(3,065)
Cost of goods sold	(417)	(360)		(1,221)	(1,058)
Gross margin	(861)	(666)		(2,354)	(2,007)
Selling and administrative expenses	(861)	(666)		(2,354)	(2,007)
Other periodic pension cost
Interest expense
Income before taxes on income
Depreciation and amortization
Capital expenditures
Total assets			[1]			[1]
Uniforms and Related Products [Member] | Operating Segments [Member]
Net sales	54,979	69,776		174,403	174,304
Cost of goods sold	35,263	45,225		112,561	113,036
Gross margin	19,716	24,551		61,842	61,268
Selling and administrative expenses	17,688	18,731		54,644	50,269
Other periodic pension cost	476	96		1,282	289
Interest expense	768	593		2,609	1,147
Income before taxes on income	784	5,131		3,307	9,563
Depreciation and amortization	1,537	1,510		4,607	4,024
Capital expenditures	1,038	885		5,193	2,278
Total assets	254,053	259,700	[1]	254,053	259,700	[1]
Remote Staffing Solutions [Member] | Operating Segments [Member]
Net sales	9,305	7,934		26,897	23,234
Cost of goods sold	3,542	3,346		10,926	9,839
Gross margin	5,763	4,588		15,971	13,395
Selling and administrative expenses	3,488	2,856		10,055	8,146
Other periodic pension cost
Interest expense
Income before taxes on income	2,275	1,732		5,916	5,249
Depreciation and amortization	240	241		745	731
Capital expenditures	276	445		881	1,264
Total assets	22,289	18,414	[1]	22,289	18,414	[1]
Promotional Products [Member] | Operating Segments [Member]
Net sales	26,460	19,186		70,563	56,876
Cost of goods sold	19,627	13,859		51,960	41,579
Gross margin	6,833	5,327		18,603	15,297
Selling and administrative expenses	4,945	4,561		15,663	13,583
Other periodic pension cost
Interest expense	317	347		905	827
Income before taxes on income	1,571	419		2,035	887
Depreciation and amortization	351	348		987	990
Capital expenditures	131	137		350	339
Total assets	$ 73,043	$ 56,916	[1]	$ 73,043	$ 56,916	[1]

[1] Intercompany balances that were previously included in total assets for each reportable segment have been excluded.