Note 8 - Operating Segment Information - Information Related to the Operations of the Company's Operating Segments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 73,087,000	$ 60,987,000
Gross margin	24,875,000	22,214,000
Selling, General and Administrative Expense, Total	21,182,000	17,429,000
Other periodic pension cost	96,000	214,000
Interest expense	277,000	184,000
Income (loss) before taxes on income	3,320,000	5,405,000
Depreciation and amortization	1,626,000	1,358,000
Capital expenditures	1,055,000	930,000
Total assets	235,079,000	197,150,000	$ 218,938,000
Gain (loss) on sale of property, plant and equipment		1,018,000
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(1,013,000)	(940,000)
Gross margin	(671,000)	(618,000)
Selling, General and Administrative Expense, Total	(671,000)	(618,000)
Other periodic pension cost
Interest expense
Income (loss) before taxes on income
Depreciation and amortization
Capital expenditures
Total assets	(62,833,000)	(24,449,000)
Gain (loss) on sale of property, plant and equipment
Uniforms and Related Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	48,125,000
Uniforms and Related Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	48,125,000	48,331,000
Gross margin	16,536,000	16,982,000
Selling, General and Administrative Expense, Total	14,140,000	13,536,000
Other periodic pension cost	96,000	214,000
Interest expense	60,000	103,000
Income (loss) before taxes on income	2,240,000	3,127,000
Depreciation and amortization	1,065,000	1,053,000
Capital expenditures	685,000	847,000
Total assets	216,536,000	174,478,000
Gain (loss) on sale of property, plant and equipment		(2,000)
Remote Staffing Solutions [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	6,286,000
Remote Staffing Solutions [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	7,299,000	4,663,000
Gross margin	4,161,000	2,547,000
Selling, General and Administrative Expense, Total	2,512,000	1,705,000
Other periodic pension cost
Interest expense
Income (loss) before taxes on income	1,649,000	1,862,000
Depreciation and amortization	237,000	188,000
Capital expenditures	265,000	54,000
Total assets	24,296,000	18,736,000
Gain (loss) on sale of property, plant and equipment		1,020,000
Promotional Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	18,676,000
Promotional Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	18,676,000	8,933,000
Gross margin	4,849,000	3,303,000
Selling, General and Administrative Expense, Total	5,201,000	2,806,000
Other periodic pension cost
Interest expense	217,000	81,000
Income (loss) before taxes on income	(569,000)	416,000
Depreciation and amortization	324,000	117,000
Capital expenditures	105,000	29,000
Total assets	$ 57,080,000	28,385,000
Gain (loss) on sale of property, plant and equipment