Note 9 - Commitments and Contingencies (Details) (USD $)	1 Months Ended		6 Months Ended	12 Months Ended		3 Months Ended			1 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014 ft	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014 Massachusetts [Member]	Jun. 30, 2014 Massachusetts [Member]	Jun. 30, 2014 Washington [Member]	Apr. 30, 2013 Default on Obligation, Februray 2012 [Member]
Note 9 - Commitments and Contingencies (Details) [Line Items]
Installation of a reactive iron wall covering area (in Feet)			250
Environmental Remediation Estimated Initial Construction Cost			$ 688,000
Environmental Remediation Expense Expected To Be Incurred			1,997,000
Estimated period			30 years
Loss Contingency, Pending Claims, Number							241	1
Loss Contingency, Claims Settled and Dismissed, Number						40
Number of cases terminated						185
Unresolved cases				16
Loss Contingency, Loss in Period		412,000	51,000	114,000	50,000
Loss Contingency, Damages Awarded, Value									30,000
Loss Contingency Accrual		377,000
Other Accrued Liabilities		$ 35,000
Number of monthly payments to pay per damanges value	29