AMDOCS LIMITED Note 9 — Goodwill and Intangible Assets, Net NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS — (Continued) (dollar and share amounts in thousands, except per share data) As of September 30, 2013 and 2012, the unamortized software assets developed for internal use were $68,255 and $57,960, respectively. The following table presents details of the Company’s total goodwill: The following table presents details regarding the Company’s total definite-lived purchased intangible assets: (1) In allocating the total preliminary purchase price of Actix, based on estimated fair values, the Company recorded $80,193 of goodwill, $2,700 of in-process research and development (indefinite life), $27,200 of core technology amortized over approximately four years, $19,500 of customer relationships amortized over approximately four years and $2,200 of other intangible assets amortized over approximately five years. As of October 1, 2011 ..................................................... $1,739,732 Other .................................................................. 2,054 As of September 30, 2012 .................................................. 1,741,786 Goodwill resulting from an immaterial acquisition(1) ............................ 80,193 Other .................................................................. (3,645) As of September 30, 2013 .................................................. $1,818,334 Estimated Useful Life (in years) Gross Accumulated Amortization Net September 30, 2013 Core technology ...................................... 4-8 $408,256 $(344,251) $ 64,005 Customer relationships ................................. 4-15 346,707 (267,252) 79,455 Intellectual property rights and purchased computer software . . — 51,996 (51,996) — Other ............................................... 5-10 25,282 (14,716) 10,566 Total ............................................... $832,241 $(678,215) $154,026 September 30, 2012 Core technology ...................................... 4-8 $381,056 $(332,322) $ 48,734 Customer relationships ................................. 6-15 327,207 (245,119) 82,088 Intellectual property rights and purchased computer software . . — 51,996 (51,996) — Other ............................................... 2-10 23,082 (12,626) 10,456 Total ............................................... $783,341 $(642,063) $141,278 The following table presents the amortization expense of the Company’s definite-lived purchased intangible assets, included in each financial statement caption reported in the consolidated statements of income: Year Ended September 30, 2013 2012 2011 Cost of service .......................................... $ 1,609 $ 1,609 $ 1,609 Amortization of definite-lived purchased intangible assets ........ 34,543 50,535 65,958 Total .................................................. $36,152 $52,144 $67,567 F-24