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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Stock Based Compensation [Abstract]  
Schedule of stock option activity
The Company had a stock option plan, the 1999 Stock Option Plan, that was adopted in 1999 and that 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 of the stock options are vested.

Options
 
Shares
  
Weighted
Average
Exercise
Price Per Share
  
Weighted
Average
Remaining
Contractual
Term
  
Aggregate
Intrinsic
Value
 
Outstanding at January 1, 2013
  69,000  $23.75       
Exercised
  ---   ---       
Forfeited or expired
  ---   ---       
Outstanding March 31, 2013
  69,000  $23.75   3.58  $771 
Exercisable at March 31, 2013
  69,000  $23.75   3.58  $771