Note 8 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Net sales	$ 60,987,000	$ 57,968,000
Gross margin	22,214,000	20,021,000
Selling and administrative expenses	17,643,000	16,463,000
Gain (loss) on sale of property, plant and equipment	1,018,000
Interest expense	184,000	148,000
Income before taxes on income	5,405,000	3,410,000
Depreciation and amortization	1,358,000	1,103,000
Capital expenditures	930,000	2,707,000
Total assets	197,150,000	185,438,000	$ 196,848,000
Uniforms and Related Products [Member]
Net sales	48,331,000	50,683,000
Gross margin	16,982,000	17,037,000
Selling and administrative expenses	13,750,000	13,652,000
Gain (loss) on sale of property, plant and equipment	(2,000)
Interest expense	103,000	124,000
Income before taxes on income	3,127,000	3,261,000
Depreciation and amortization	1,053,000	1,003,000
Capital expenditures	847,000	838,000
Total assets	174,478,000	165,806,000
Remote Staffing Solutions [Member]
Net sales	4,663,000	4,358,000
Gross margin	2,547,000	2,316,000
Selling and administrative expenses	1,705,000	1,407,000
Gain (loss) on sale of property, plant and equipment	1,020,000
Interest expense
Income before taxes on income	1,862,000	909,000
Depreciation and amortization	188,000	93,000
Capital expenditures	54,000	1,854,000
Total assets	18,736,000	16,573,000
Promotional Products Segment [Member]
Net sales	8,933,000	3,800,000
Gross margin	3,303,000	1,240,000
Selling and administrative expenses	2,806,000	1,976,000
Gain (loss) on sale of property, plant and equipment
Interest expense	81,000	24,000
Income before taxes on income	416,000	(760,000)
Depreciation and amortization	117,000	7,000
Capital expenditures	29,000	15,000
Total assets	28,385,000	29,699,000
Intersegment Eliminations [Member]
Net sales	(940,000)	(873,000)
Gross margin	(618,000)	(572,000)
Selling and administrative expenses	(618,000)	(572,000)
Gain (loss) on sale of property, plant and equipment
Interest expense
Income before taxes on income
Depreciation and amortization
Capital expenditures
Total assets	$ (24,449,000)	$ (26,640,000)