Note 8 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Total assets	$ 198,183,000	$ 188,425,000	$ 198,183,000	$ 188,425,000	$ 196,848,000
Net sales	65,604,000	64,660,000	126,591,000	122,628,000
Gross margin	23,374,000	21,763,000	45,588,000	41,784,000
Selling and administrative expenses	17,478,000	16,956,000	35,121,000	33,419,000
Gain (loss) on sale of property, plant and equipment			1,018,000
Interest expense	195,000	192,000	379,000	340,000
Income before taxes on income	5,701,000	4,615,000	11,106,000	8,025,000
Depreciation and amortization	1,357,000	1,216,000	2,715,000	2,333,000
Capital expenditures	1,074,000	2,825,000	2,004,000	5,527,000
Uniforms and Related Products [Member]
Total assets	174,008,000	167,376,000	174,008,000	167,376,000
Net sales	52,112,000	51,223,000	100,443,000	101,906,000
Gross margin	18,172,000	16,535,000	35,154,000	33,572,000
Selling and administrative expenses	13,622,000	12,821,000	27,372,000	26,473,000
Gain (loss) on sale of property, plant and equipment			(2,000)
Interest expense	107,000	128,000	210,000	252,000
Income before taxes on income	4,443,000	3,586,000	7,570,000	6,847,000
Depreciation and amortization	1,046,000	969,000	2,099,000	1,972,000
Capital expenditures	797,000	991,000	1,644,000	1,829,000
Remote Staffing Solutions [Member]
Total assets	19,784,000	18,944,000	19,784,000	18,944,000
Net sales	5,562,000	4,500,000	10,225,000	8,858,000
Gross margin	3,005,000	2,466,000	5,552,000	4,782,000
Selling and administrative expenses	1,761,000	1,490,000	3,466,000	2,897,000
Gain (loss) on sale of property, plant and equipment			1,020,000
Interest expense
Income before taxes on income	1,244,000	976,000	3,106,000	1,885,000
Depreciation and amortization	197,000	91,000	385,000	184,000
Capital expenditures	253,000	1,783,000	307,000	3,637,000
Promotional Products Segment [Member]
Total assets	30,981,000	27,875,000	30,981,000	27,875,000
Net sales	8,859,000	9,839,000	17,792,000	13,639,000
Gross margin	2,796,000	3,346,000	6,099,000	4,586,000
Selling and administrative expenses	2,694,000	3,229,000	5,500,000	5,205,000
Gain (loss) on sale of property, plant and equipment
Interest expense	88,000	64,000	169,000	88,000
Income before taxes on income	14,000	53,000	430,000	(707,000)
Depreciation and amortization	114,000	156,000	231,000	163,000
Capital expenditures	24,000	51,000	53,000	66,000
Intersegment Eliminations [Member]
Total assets	(26,590,000)	(25,770,000)	(26,590,000)	(25,770,000)
Net sales	(929,000)	(902,000)	(1,869,000)	(1,775,000)
Gross margin	(599,000)	(584,000)	(1,217,000)	(1,156,000)
Selling and administrative expenses	(599,000)	(584,000)	(1,217,000)	(1,156,000)
Gain (loss) on sale of property, plant and equipment
Interest expense
Income before taxes on income
Depreciation and amortization
Capital expenditures