The following table reconciles the number of shares used in calculating basic and diluted earnings per share:


	Three Months Ended March 31,
(in thousands)	2023		2022
Basic weighted-average shares outstanding		80,027		69,419
Incremental shares due to:
Performance shares		97		140
Restricted stock units		43		64
Diluted weighted-average shares outstanding		80,167		69,623

For stock-based awards, the dilutive effect is calculated using the treasury stock method. Under this method, the dilutive effect is computed as if the awards were exercised at the beginning of the period (or at time of issuance, if later) and assumes the related proceeds were used to repurchase common stock at the average market price during the period. Related proceeds include future compensation cost associated with the stock award.

For the three months ended March 31, 2023 and 2022, there were approximately 134,000 and 114,400 stock-based awards, respectively, that were excluded from the calculation of diluted earnings per share as they were anti-dilutive.

On August 31, 2022, our board of directors authorized management to repurchase up to $200.0 million of our common stock with no set time limit for the repurchase (the 2022 Repurchase Program). Concurrently, the board of directors terminated the remaining repurchase authorization under a previously approved share repurchase plan.

Shares under the 2022 Repurchase Program may be repurchased in open market transactions, including pursuant to a trading plan adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934 (the Trading Plan). The timing, manner, price and amount of repurchases will be determined according to, and, subject to the terms of the Trading Plan, the 2022 Repurchase Program may be suspended, terminated or modified at any time for any reason. No shares were repurchased during the three months ended March 31, 2023 and 2022. At March 31, 2023, we had remaining authorization of $150.0 million for future stock repurchases under the 2022 Repurchase Program. Transaction costs are not counted against authorized funds.

We record share repurchases upon trade date as opposed to the settlement date when cash is disbursed. We record a liability to account for repurchases that have not been cash settled. We retire shares upon repurchase. Any excess repurchase price over par is recorded in accumulated deficit.