10. Goodwill and Intangible Assets

 

Goodwill

 

Changes in the carrying amount of goodwill consisted of the following (in thousands):

 

 

For a discussion of the significant changes in goodwill, see Note 9. The Company’s goodwill is not deductible for income tax purposes.

 

Intangible assets

 

The Company’s intangible assets and related accumulated amortization consisted of the following as of December 31, 2013 and September 30, 2014 (in thousands):

 

 

For a discussion of the significant changes in intangible assets, see Note 9. The weighted average amortization period is 4.4 years for developed technology, 2.0 years for non-competition agreements, and 4.3 years in total.

 

The Company recorded amortization expense during the respective periods for these intangible assets as follows: (in thousands):

 

 

Amortization of finite lived intangible assets as of September 30, 2014 is as follows for the next four years (in thousands):