In December 2022, 174,550 restricted stock units were granted to certain directors, officers and managers of the Company and 102,000 performance share units were granted to certain officers of the Company. During the three months ended December 31, 2022, there were 4,394 performance shares earned and added to those granted in December 2020, according to the targeted performance formula. The awards were made pursuant to the Amended and Restated 2008 Equity Incentive Plan, which was approved at the annual meeting of shareholders held on February 22, 2018.

The following table presents share-based compensation expense recognized during the periods presented. There was no stock option expense for either period presented.


	Three Months Ended December 31,
		2022		2021

Restricted stock units expense		941		898
Performance share units expense		210		128
Total stock-based compensation expense		$	1,151	$	1,026

At December 31, 2022, 2,358,775 shares were subject to vested options, with a weighted average exercise price of $15.14 per share and a weighted average grant date fair value of $2.55 per share. At December 31, 2022, 576,020 restricted stock units and 218,071 performance share units with a weighted average grant date fair value of $16.50 and $15.87 per unit, respectively, are unvested. Expected future compensation expense relating to the 1,341,768 restricted stock units and 218,071 performance