Born in San Sebastián, Gipuzkoa, Idiakez finished his graduation with Real Sociedad, making his senior debuts with the reserves and also playing alongside his younger brother Iñigo [REF].
Idiakez resumed his career mainly in Segunda División B, representing Real Avilés, Burgos CF (two stints), Ciudad de Murcia - appearing half-a-season in Segunda División -[REF]CD Linares, Girona FC and CF Reus Deportiu, retiring in 2007 at the age of 35.