Note 1 - Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2003
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Advertising Expense									$ 89,000	$ 51,000
Shipping, Handling and Transportation Costs									7,053,000	5,458,000
Amortization of Intangible Assets									1,106,000	964,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	2,066,000								2,066,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,066,000								2,066,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,041,000								2,041,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,920,000								1,920,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,420,000								1,420,000
Finite-Lived Intangible Assets, Amortization Expense, Year Six	920,000								920,000
Finite-Lived Intangible Assets, Amortization Expense, Year Seven	920,000								920,000
Finite-Lived Intangible Assets, Amortization Expense, Year Eight	920,000								920,000
Finite-Lived Intangible Assets, Amortization Expense, Year Nine	920,000								920,000
Finite-Lived Intangible Assets, Amortization Expense, Year Ten	460,000								460,000
Impairment of Intangible Assets (Excluding Goodwill)					1,226,000					1,226,000
Pension Plan, Prior Service Costs, Amortization Term	20 years								20 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)											2,500,000
Number of Reportable Segments									2
Accounts Receivable, Net, Current	22,735,000				16,655,000				22,735,000	16,655,000
Revenue, Net	45,473,000	44,184,000	30,854,000	30,985,000	31,044,000	30,599,000	29,335,000	28,508,000
Other Receivables	4,133,000				2,995,000				4,133,000	2,995,000
Five Largest [Member] | Sales [Member] | Customer Concentration Risk [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage									23.20%	26.70%
Concentration Risk, Number of Customers									5
Five Largest [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage									27.60%	29.60%
Concentration Risk, Number of Customers									5
Accounts Receivable, Net, Current	6,264,000								6,264,000
Five Largest [Member] | Customer Concentration Risk [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Accounts Receivable, Net, Current					4,930,000					4,930,000
Revenue, Net									35,084,000	31,961,000
Largest [Member] | Sales [Member] | Customer Concentration Risk [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage									6.70%	7.00%
Largest [Member] | Customer Concentration Risk [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Revenue, Net									10,110,000	8,412,000
Other Receivables	4,018,000				2,966,000				4,018,000	2,966,000
Building [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	2.50%								2.50%
Building [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	5.00%								5.00%
Building Improvements [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	2.50%								2.50%
Building Improvements [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	20.00%								20.00%
Machinery, Equipment and Fixtures [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	10.00%								10.00%
Machinery, Equipment and Fixtures [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	33.33%								33.33%
Transportation Equipment [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	20.00%								20.00%
Transportation Equipment [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Depreciation, Straight-line Percentage	33.33%								33.33%
Trade Names [Member] | HPI [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure	4,700,000								4,700,000
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage									10.00%
Supplier Concentration Risk [Member] | Central America [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage									33.00%	48.00%
2003 Plan [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)	2,484,281								2,484,281
HPI [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Amortization of Intangible Assets									$ 960,000