C414 PLT REQUIRED TO INITIATE A 360 DEG TURN TO AVOID A CARJ WHEN BREAKING OUT OF CLOUDS ON APCH TO IDA; BOTH RPTING OVER THE SAME FAF INBOUND FOR LNDG.

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I WAS FLYING ON AN IFR FLT PLAN TO IDAHO FALLS; ID. ZLC HAD RADAR OUTAGE IN THE AREA. APPROX 20 MI W WAS GIVEN CLRNC FOR THE ILS RWY 20 APCH. A CANADAIR REGIONAL JET THAT HAD BEEN DIVERTED FROM SALT LAKE WAS INFORMED THEY COULD EXPECT HOLDING AT UCONN; THE OM FOR THE APCH. THE CARJ RPTED 'MINIMUM FUEL;' AND ASKED IF THERE WERE ANY WAY THEY COULD AVOID A DELAY. AFTER CONSULTING WITH THE FLT NURSES; I VOLUNTEERED TO HOLD; AND LET THE REGIONAL JET GO FIRST. I ENTERED THE HOLD AT UCONN AT 9500 FT MSL VFR ON TOP. TOPS WERE AT 8000 FT. AS I TURNED INBOUND ON THE LOC; CTR INFORMED ME THAT THE CARJ HAD CANCELLED IFR; AND I WAS AGAIN CLRED FOR THE APCH. AT THIS POINT; I WAS ON THE LOC AND JUST BELOW THE GS; SO I INTERCEPTED AND PROCEEDED DOWN ON THE ILS. I ENTERED IMC CONDITIONS AT 8000 FT. I WAS HANDED OFF TO IDA TWR. IDA TWR ASKED FOR A RPT AT UCONN. AS I BEGAN TO KEY THE MIKE FOR THE UCONN RPT; THE CARJ RPTED AT UCONN. I BEGAN TO LEVELOFF; AND BROKE OUT OF THE BASES ABOVE 6700 FT. I LOOKED OUT; AND IMMEDIATELY AHEAD AND BELOW WAS THE REGIONAL JET. SEPARATION APPEARED TO BE 300 FT. I BEGAN A L TURN; AND PERFORMED A 360 DEGS TO REESTABLISH ON FINAL. PROPER SEPARATION WAS THEN ESTABLISHED; AND BOTH ACFT LANDED WITHOUT INCIDENT.