Note 2 - Stock-based Compensation	3 Months Ended
Note 2 - Stock-based Compensation	Mar. 31, 2016
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 2 : Stock-Based Compensation The Company’s 1999 Stock Option Plan 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. There are no stock options outstanding as of March 31, 2016. There were no shares exercised during the three months ended March 31, 2015.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.