Note 14 - Concentration of Credit Risk

6 Months Ended

Jun. 30, 2014

Risks and Uncertainties [Abstract]

Concentration Risk Disclosure [Text Block]

14.  Concentration of Credit Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of cash and cash equivalents and securities issued with the guarantee of U.S. Government Agencies. The Company places its temporary cash investments with high credit quality financial institutions and generally limits the amount of credit exposure in any one financial institution. The Company maintains bank account balances, which exceed insured limits. The Company has not experienced any losses in such accounts and believes that it is not exposed to any significant credit risk on cash. Management does not believe significant credit risk existed at June 30, 2014 and December 31, 2013.