Note 17 - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Uniforms and Related Products [Member]
Net sales									$ 198,319,000	$ 188,199,000
Gross margin									65,247,000	64,480,000
Selling and administrative expenses									49,225,000	48,924,000
Interest expense									519,000	484,000
Income before taxes on income									15,503,000	15,072,000
Depreciation, Depletion and Amortization, Nonproduction									3,561,000	3,581,000
Capital expenditures									3,003,000	2,187,000
Total assets	$ 140,779,000				$ 131,710,000				140,779,000	131,710,000
Remote Staffing Solutions [Member]
Net sales									15,604,000	11,424,000
Gross margin									8,579,000	6,487,000
Selling and administrative expenses									$ 5,186,000	$ 4,030,000
Interest expense
Income before taxes on income									$ 3,393,000	$ 2,457,000
Depreciation, Depletion and Amortization, Nonproduction									312,000	258,000
Capital expenditures									5,066,000	2,749,000
Total assets	14,551,000				9,797,000				14,551,000	9,797,000
Intersegment Eliminations [Member]
Net sales									(3,606,000)	(3,374,000)
Gross margin									(2,393,000)	(2,230,000)
Selling and administrative expenses									$ (2,393,000)	$ (2,230,000)
Interest expense
Income before taxes on income
Depreciation, Depletion and Amortization, Nonproduction
Capital expenditures
Total assets	(3,530,000)				(1,570,000)				$ (3,530,000)	$ (1,570,000)
Net sales									210,317,000	196,249,000
Gross margin	17,882,000	$ 19,224,000	$ 18,531,000	$ 15,796,000	17,242,000	$ 18,433,000	$ 19,006,000	$ 14,056,000	71,433,000	68,737,000
Selling and administrative expenses									52,018,000	50,724,000
Interest expense									519,000	484,000
Income before taxes on income									18,896,000	17,529,000
Depreciation, Depletion and Amortization, Nonproduction									3,873,000	3,839,000
Capital expenditures									8,069,000	4,936,000
Total assets	$ 151,800,000				$ 139,937,000				$ 151,800,000	$ 139,937,000