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Stockholders' Equity (Tables) | 3 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Schedule of stock options using valuation assumptions | The expected term of options granted is derived from the output of the option valuation model and represents the period of time that options granted are expected to be outstanding; the range given below results from different timeframes for the various market conditions being met.
2020 Option Grant |  |  |  |
Expected Volatility |  |  | 26.0 | %
Expected Term (in years) |  | 3.61 |
Risk Free Rate |  |  | 1.60 | %
2019 Modified Option Grant |  |  |  |
Expected Volatility |  |  | 25.0 | %
Expected Term (in years) |  | 1.50 |
Risk Free Rate |  |  | 2.52 | %
2019 Option Grants |  |  |  |
Expected Volatility |  |  | 30.0 | %
Expected Term (in years) |  | 4.09 |
Risk Free Rate |  |  | 2.95 | %
Schedule of treasury stock purchases and issuances | The following table illustrates the Company’s treasury stock activity for the three months ended December 31, 2020:
(in thousands, except share amounts) |  |  |  |  |  |  |  |
|  | Shares |  |  | Cost |
Balance as of September 30, 2020 |  |  | 923,621 |  |  | $ | 30,779 |
Issued to employees and directors |  |  | (13,636 | ) |  |  | (358 | )
Balance as of December 31, 2020 |  |  | 909,985 |  |  | $ | 30,421 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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