Note 7 - Equity Investments in Unconsolidated Affiliate (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2005
Note 7 - Equity Investments in Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Aggregate Cost					$ 1,450,000
Expense To Acquire Inventory	5,019,000	4,140,000	13,486,000	9,132,000
Income (Loss) from Equity Method Investments	22,000	101,000	216,000	172,000
Equity Method Investments	2,924,000		2,924,000
Cumulative Equity In Income of Unconsolidated Affiliate	2,494,000		2,494,000
Proceeds from Equity Method Investment, Dividends or Distributions	77,000
Long Term Advance For Materials [Member] | Alpha ProTech Engineered Products [Member]
Note 7 - Equity Investments in Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Aggregate Cost					942,000
Alpha ProTech Engineered Products [Member]
Note 7 - Equity Investments in Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Ownership Percentage					41.66%
Equity Method Investment, Aggregate Cost					508,000
Maple Industries And Associates [Member]
Note 7 - Equity Investments in Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Ownership Percentage					58.34%
Equity Method Investment, Aggregate Cost					$ 708,000