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STOCKHOLDERS' EQUITY
 12 Months Ended
Sep. 30, 2021
Equity [Abstract]  
STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY
Repurchase of Common Stock
The Company's Board of Directors authorized the November 20, 2019 share repurchase program to repurchase up to an additional 7,500,000 shares of the Company's outstanding common stock. This authorization is effective from November 21, 2019 through December 31, 2022. On September 7, 2021, the Company's Board of Directors announced a new share repurchase program to repurchase up to an additional 6,000,000 shares of the Company's outstanding common stock. This authorization is effective from September 3, 2021 through September 30, 2024. During the fiscal years ended September 30, 2021 and 2020, the Company repurchased 2,833,755 and 3,669,597 shares, respectively, as part of the share repurchase programs.
Under the repurchase programs, repurchased shares were retired and designated as authorized but unissued shares. The Company accounts for repurchased shares using the par value method under which the repurchase price is charged to paid-in capital up to the amount of the original proceeds of those shares. When the repurchase price is greater than the original issue proceeds, the excess is charged to retained earnings. As of September 30, 2021, the remaining number of shares available for repurchase under the programs were 7,315,876 shares of common stock.
For the fiscal years ended September 30, 2021, and 2020, the Company also repurchased 101,481 and 103,830 shares, or $2.9 million and $3.2 million, of common stock, respectively, in settlement of employee tax withholding obligations due upon the vesting of restricted stock.

Repurchase of Treasury Stock
The Company accounts for the retirement of repurchased shares, including treasury stock, using the par value method under which the repurchase price is charged to paid-in capital up to the amount of the original proceeds of those shares. When the repurchase price is greater than the original issue proceeds, the excess is charged to retained earnings. The Company retired 203,224 and zero shares of common stock held in treasury during the fiscal years ended September 30, 2021 and 2020, respectively.