|6 Months Ended|
Jun. 30, 2017
|Goodwill and Intangible Assets Disclosure [Abstract]|
The following table summarizes the components of gross and net intangible asset balances (in thousands):
Finite-lived intangible assets are amortized over their weighted average lives, which are 14 years for technology, 10 years for customer related intangibles, 6 years for internally developed software, 7 years for trade names, 13 years for patents, and 11 years in total.
Internally developed software consists of $13.3 million relating to costs incurred for development of internal use computer software and $2.2 million for development of software to be sold.
Amortization expense related to intangible assets with definite lives was as follows (in thousands):
Expected amortization expense related to amortizable intangible assets is as follows (in thousands):
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://www.xbrl.org/2003/role/presentationRef