Family Loan Settlement

I loaned over six figures to a family member about a decade ago.  The loan was interest-free.  After a few payments, all attempts to repay the loan stopped.  Sued the family member and will receive a settlement for the full amount. 

 

Can anyone tell me the tax ramifications of the settlement?   Apparently, there can be an imputed interest rate where the interest income is what I would have earned on the loan.

 

Any help will be appreciated.