Note 14 - Subsequent Events

3 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Subsequent Events [Text Block]

(

1

4

)

Subsequent Events

During

August 2018,

the Company issued an additional

1,400

shares of Series E Senior Convertible Voting Perpetual Preferred Stock at a purchase of

$25.00

per share for total gross proceeds of

$35,000.