Note 9 - Stock Option Plan

12 Months Ended

Dec. 31, 2017

Notes to Financial Statements

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Note

9

: Stock Option Plan

The Company’s

1999

Stock Option Plan was adopted in

1999

and was terminated on

March 9, 2009.

Incentive stock options were granted annually to key employees of NBI and its subsidiaries from

1999

to

2005

and

none

have been granted since

2005.

All stock options granted under the plan have been exercised or expired.

There were

no

shares available for exercise during

2017

or

2016.

In

2015,

there were

7,500

shares exercised with an intrinsic value of

$54.

Intrinsic value is the difference between the price at which the shares

may

be exercised and the stock price as of the report date.

No

tax benefit was recognized on shares exercised in

2015.