Whenever you state GAAP?
Brody Preston — Stephens Inc — Analyst
Yes, after all you provide — yes you provide an FTE and a GAAP margin in your pr release. And thus imagine down that the core margin on a GAAP as well as an FTE foundation simply.
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes, that is FTE foundation that people’re dealing with here.
Brody Preston — Stephens Inc — Analyst
Okay. Therefore it appears like perhaps just just a little little more compression in the 1st quarter then type of stable to up after that?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes. Which is perfect.
Brody Preston — Stephens Inc — Analyst
Okay. Fine. I recently desired to touch about what % of loans, the mortgage profile is linked with LIBOR and just how most of this is certainly one thirty days LIBOR?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes the book that is total 24% is associated with a month LIBOR. Therefore it is pretty responsive to that LIBOR price. And everbody knows, it declined a great deal within the 4th quarter, about 30 basis points. I believe to make certain that had been a driver that is big of loan yield compression you saw — we saw.
Brody Preston — Stephens Inc — Analyst
Ok and exactly just exactly what per cent associated with profile is linked with prime?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Brody Preston — Stephens Inc — Analyst
Okay. And I also’m presuming these loans type of reprice through the entire quarter for a month-to-month foundation?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes, you got that right.
Brody Preston — Stephens Inc — Analyst
Robert Michael Gorman — Executive Vice President and Chief Financial Officer