Note 7 - Equity Investments in Unconsolidated Affiliate (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013		Dec. 31, 2005	Dec. 31, 2005 Alpha ProTech Engineered Products [Member] Long Term Advance For Materials [Member]	Dec. 31, 2005 Alpha ProTech Engineered Products [Member]	Dec. 31, 2005 Maple Industries And Associates [Member]	Sep. 30, 2012 Repaid Balance [Member]
Note 7 - Equity Investments in Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Ownership Percentage							41.66%	58.34%
Equity Method Investment, Aggregate Cost					$ 1,450,000	$ 942,000	$ 508,000	$ 708,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	2,818,000		2,708,000	[1]					417,000
Expense To Acquire Inventory	4,258,000	2,709,000
Income (Loss) from Equity Method Investments	110,000	33,000
Equity Method Investments	2,818,000
Cumulative Equity In Income of Unconsolidated Affiliate	2,387,000
Proceeds from Equity Method Investment, Dividends or Distributions	$ 77,000

[1] The condensed consolidated balance sheet as of December 31, 2013 has been prepared using information from the audited consolidatedbalance sheet as of that date.