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Stock Options and Other Equity-Based Incentive Instruments (Tables)
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Summary of Stock Option Activity Stock option activity during the nine months ended September 30, 2023 is summarized in the following table:
Number
of Shares		Weighted
Average
Exercise Price
Outstanding at December 31, 202215,500 $21.27 
Options granted— — 
Options exercised(8,000)19.46 
Options forfeited— — 
Outstanding at September 30, 20237,500 $23.21 
Summary of Options Outstanding
The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of September 30, 2023:
Currently
Exercisable		Currently Not
Exercisable		Total
Outstanding
Number of options7,500 — 7,500 
Weighted average exercise price$23.21 $— $23.21 
Intrinsic value (in thousands)$66 $— $66 
Weighted average remaining contractual term (yrs.)1.00 years1.0
Summary of Restricted Stock Unit (RSU) Activity Activity related to restricted stock unit awards during the nine months ended September 30, 2023 is summarized in the following table:
Service
Condition
Vesting RSUs		Market Plus
Service
Condition
Vesting RSUs
Outstanding at December 31, 2022139,194 114,481 
RSUs granted84,066 66,209 
RSUs added through dividend and performance credits3,715 — 
RSUs released(72,847)(55,928)
RSUs forfeited/expired(844)(902)
Outstanding at September 30, 2023153,284 123,860