Table:
|  |  | Year Ended December 31, |  |
| --- | --- | --- | --- |
| (In thousands) | 2019 | 2018 | 2017 |
| Restricted stock | $ 4,013 | $ 3,249 | $ 1,986 |
| Performance shares | 2,823 | 1,870 | 780 |
| Total | $ 6,836 | $ 5,119 | $ 2,766 |
Paragraphs:
Share-based Compensation Expense The following table summarizes total compensation costs recognized for share-based payments during the years ended December 31, 2019, 2018 and 2017:
Income tax benefits related to share-based compensation of approximately $1.8 million, $1.3 million and $1.1 million were recorded for the years ended December 31, 2019, 2018 and 2017, respectively. Share-based compensation expense is included in “selling, general and administrative expenses” in the accompanying consolidated statements of operations.
As of December 31, 2019, total unrecognized compensation cost related to non-vested RSAs and PSAs was $10.6 million and will be recognized over a weighted-average period of approximately 1.7 years.
Question:
What was the increase / (decrease) in the performance shares from 2018 to 2019?