Note 3 - New Accounting Standards (Details Textual)	3 Months Ended
	Mar. 31, 2016 USD ($)
Reclassification From Other Non-current Assets to Non-current Portion of Long-term Debt [Member] | December 31, 2015 [Member]
Prior Period Reclassification Adjustment	$ 255,000
Reclassification From Other Non-current Assets to Non-current Portion of Long-term Debt [Member]
Current Period Reclassification Adjustment	234,000
Reclassification from Amortization Included in General and Administration Expense to Interest Expense [Member]
Current Period Reclassification Adjustment	$ 21,000