Note 6 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Uniforms and Related Products [Member]
Net sales	$ 61,556,000	$ 53,392,000	$ 177,101,000	$ 148,436,000
Gross margin	21,263,000	17,563,000	59,421,000	49,004,000
Selling and administrative expenses	16,002,000	12,764,000	47,680,000	37,014,000
Interest expense	172,000	130,000	512,000	395,000
Income before taxes on income	5,089,000	4,669,000	11,229,000	11,595,000
Depreciation and amortization	1,150,000	864,000	3,285,000	2,612,000
Capital expenditures	880,000	711,000	2,775,000	1,973,000
Total assets	182,096,000	141,170,000	182,096,000	141,170,000	$ 182,096,000
Remote Staffing Solutions [Member]
Net sales	4,624,000	4,171,000	13,482,000	11,419,000
Gross margin	2,465,000	2,250,000	7,247,000	6,356,000
Selling and administrative expenses	1,548,000	1,338,000	4,445,000	3,753,000
Interest expense
Income before taxes on income	917,000	912,000	2,802,000	2,603,000
Depreciation and amortization	133,000	80,000	317,000	222,000
Capital expenditures	184,000	1,308,000	3,821,000	2,145,000
Total assets	19,211,000	12,118,000	19,211,000	12,118,000
Intersegment Eliminations [Member]
Net sales	(898,000)	(901,000)	(2,673,000)	(2,730,000)
Gross margin	(588,000)	(589,000)	(1,744,000)	(1,809,000)
Selling and administrative expenses	(588,000)	(589,000)	(1,744,000)	(1,809,000)
Interest expense
Income before taxes on income
Depreciation and amortization
Capital expenditures
Total assets	(6,542,000)	(1,326,000)	(6,542,000)	(1,326,000)
Net sales	65,282,000	56,662,000	187,910,000	157,125,000
Gross margin	23,140,000	19,224,000	64,924,000	53,551,000
Selling and administrative expenses	16,962,000	13,513,000	50,381,000	38,958,000
Interest expense	172,000	130,000	512,000	395,000
Income before taxes on income	6,006,000	5,581,000	14,031,000	14,198,000
Depreciation and amortization	1,283,000	944,000	3,602,000	2,834,000
Capital expenditures	1,064,000	2,019,000	6,596,000	4,118,000
Total assets	$ 194,765,000	$ 151,962,000	$ 194,765,000	$ 151,962,000		$ 151,731,000