There is Avery fine line between a custodial interrogation (in which the law requires an officer to read you your rights), and an investigative detention (in which they do not). What complicates your situation is if you made a separate statement to the LPO before the police arrived. If you did so, that statement is likely admissible.
As far as what will happen will depend on your criminal history (you say you have none which works in your favor), your role in the scheme, the prosecutor, your employer's position on the matter, and the judge.
Bottom line: you need a good lawyer to help minimize the damage to your future.
Joseph Vinas answers questions on Avvo for general information and not as legal advice. Those answers do not establish an attorney/client relationship. Please contact Mr. Vinas at (713) 229-9992 for a FREE CONSULTATION or visit his website at www.vgsfirm.com
I agree with Mr. Vinas.
I have both prosecuted and defended employee theft. All the things Mr. Vinas touches on and more can influence the outcome.
Best place to start is hiring a good criminal defense lawyer. A five thousand dollar theft is a felony.
Answers on Avvo are for general information purposes only and should not be relied upon as legal advice. No attorney / client relationship is created by providing this answer. For specific advice about your situation, you should consult a competent attorney of your choosing.