Note 19 - Segments and Geographic Information - Segments and Geographic Information (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Net sales		$ 785,602	$ 801,093
Segment EBIT		63,146	58,495
Retained corporate costs		(31,884)	(31,878)
Impairment of goodwill (note 4)		(45,981)
Impairment of long-lived assets (notes 4, 5 & 15)		(19,171)
Fees associated with strategic initiative (1)	[1]		(2,341)
Organizational realignment		(3,341)
Debt refinancing fees		(525)
Interest expense		(22,510)	(21,979)
Provision for income taxes		(8,753)	(10,253)
Net loss		(69,019)	(7,956)
Depreciation and amortization		39,046	44,333
Capital Expenditures		31,159	45,087
Accounts Receivable, Net and Inventory, Net	[2]	256,104	276,080
Product [Member]
Net sales		782,437	797,858
U.S. and Canada Segment [Member]
Segment EBIT		54,072	36,805
Impairment of goodwill (note 4)
Depreciation and amortization		12,547	13,358
Capital Expenditures		8,464	22,203
Accounts Receivable, Net and Inventory, Net	[2]	137,072	152,168
U.S. and Canada Segment [Member] | Product [Member]
Net sales		491,230	483,741
Latin America Segment [Member]
Segment EBIT		6,208	12,599
Impairment of goodwill (note 4)		(45,981)
Depreciation and amortization		14,758	17,457
Capital Expenditures		16,090	13,527
Accounts Receivable, Net and Inventory, Net	[2]	62,635	64,166
Latin America Segment [Member] | Product [Member]
Net sales		141,584	148,091
EMEA Segment [Member]
Segment EBIT		5,529	7,219
Depreciation and amortization		6,845	7,412
Capital Expenditures		5,036	5,051
Accounts Receivable, Net and Inventory, Net	[2]	45,454	46,576
EMEA Segment [Member] | Product [Member]
Net sales		123,945	138,399
Other Segments [Member]
Segment EBIT		(2,663)	1,872
Depreciation and amortization		3,359	4,431
Capital Expenditures		488	745
Accounts Receivable, Net and Inventory, Net	[2]	10,943	13,170
Other Segments [Member] | Product [Member]
Net sales		25,678	27,627
Corporate Segment [Member]
Depreciation and amortization		1,537	1,675
Capital Expenditures		$ 1,081	$ 3,561

[1] Legal and professional fees associated with a strategic initiative that was terminated during the third quarter of 2018.

[2] Segment assets are defined as net accounts receivable plus net inventory.