|12 Months Ended|
Dec. 27, 2018
|Goodwill and Intangible Assets Disclosure [Abstract]|
5. Intangible Assets
The following summarizes the balances of identifiable intangible assets as of December 27, 2018 and December 28, 2017 (in thousands):
Amortization expense related to amortizable intangible assets for the years ended December 27, 2018, December 28, 2017 and December 29, 2016, was $32 thousand, $32 thousand and $32 thousand, respectively.
Estimated intangible asset amortization for the next five years is as follows (in thousands):
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef