pre_text: Stock-based compensation expense is included in general and administrative expense for each period as follows: As of December 31, 2019, there was $4,801 of unrecognized stock-based compensation expense related to unvested employee stock options and $1,882 of unrecognized stock-based compensation expense related to unvested RSUs. These costs are expected to be recognized over a weighted-average period of 2.13 and 2.33 years, respectively.
table: Year Ended Year Ended
table: Stock-Based Compensation by Type of Award December 31, 2019 December 31, 2018
table: Stock options $2,756 $2,926
table: RSUs 955 1,129
table: Total stock-based compensation expense $3,711 $4,055
question: Analyse this data from a financial earnings document. What was the change in the amount of stock options in 2019 from 2018?