Note 4 - Stock Compensation (Details Textual)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($) shares	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) shares	Jun. 30, 2015 USD ($)	Dec. 31, 2012 shares
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	0		771		75,018
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares	83,927		83,927
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Value, Payable Requisite Employee Age	65 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Value, Payable Period before Death or Permanent Disability	60 days
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent | $	$ 0		$ 0
Number of Employees in Plan	4		4
Dividends | $	$ 0		$ (142,694)	$ (151,791)