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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2022
Compensation Related Costs [Abstract]  
Schedule of Nonvested Share Activity [Table Text Block] The following summarizes the activity of our PSUs and RSUs awarded under our incentive plan for the six months ended June 30, 2022:
PSUsRSUs
Number of sharesWeighted Average Grant-Date Fair ValueNumber of sharesWeighted Average Grant-Date Fair Value
Outstanding, December 31, 2021246,210 $39.50 161,300 $45.08 
Granted66,180 79.81 86,164 80.00 
Performance condition adjustment (a)64,399 52.45 — — 
Vested(58,935)34.41 (91,594)43.58 
Forfeited— — (1,236)79.83 
Outstanding, June 30, 2022317,854 $51.46 154,634 $65.15 
_______________________________ 
(a)    Represents additional PSUs granted during the six months ended June 30, 2022, related to the 2021 performance condition
adjustment described above.
Stock-Based Compensation Expense Recognized [Table Text Block] Total stock-based compensation recognized from PSUs and RSUs, net of forfeitures, was as follows:
Three Months Ended
June 30		Six Months Ended
June 30
2022202120222021
(thousands)
PSUs$1,695 $745 $3,001 $1,834 
RSUs1,317 666 2,402 1,669 
Total$3,012 $1,411 $5,403 $3,503