Capture data between 2 characters

Hi I need to parse the content between the first and second '-' in a string, ie  012-09324-5418567  (Oracle 10g)
The following does work for me; however, I was also wondering if there is a more efficient way to do this or how to do it using regexp_instr:
 

SELECT SUBSTR('012-09324-541',INSTR('012-09324-541', '-')+1, INSTR('012-09324-541', '-' ,1,2)-INSTR('012-09324-541', '-')-1) FROM DUAL;

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Result:  09324
 
Thank you in advance for suggestions.