pre_text: Intangible Assets Internal software development costs of $2,526 and $12,666 were capitalized during the years ended December 31, 2019 and 2018, respectively, and are classified within software development costs as an intangible asset. Amortization expense related to the capitalized internally developed software was $7,464 and $3,832 for the years ended December 31, 2019 and 2018, respectively, and is included in cost of revenues, sales and marketing and general and administrative expenses in the accompanying Consolidated Statements of Operations and Comprehensive Loss. Expressed in US $000's except share and per share amounts
table: December 31, 2018
table: Cost Accumulated amortization Net book value
table: $ $ $
table: Acquired technology 15,556 7,875 7,681
table: Software development costs 24,963 9,226 15,737
table: Acquired customer relationships 495 346 149
table: Purchased software 6,973 4,503 2,470
table: Other intangible assets 591 556 35
table: 48,578 22,506 26,072
question: Analyse this data from a financial earnings document. How much is the 2019 software development costs excluding the internal software development costs of $12,666?