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Stockholders' Equity (Tables) | 3 Months Ended
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Dec. 31, 2018
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 time-frames for the various market conditions being met. 2019 Option Grant
Expected Volatility | 30.0 | %
Expected Term (in years) | 4.09 |
Risk Free Rate | 2.95 | %
2016 Option Grant
Expected Volatility | 32.19 | %
Expected Term (in years) | 2.6 - 4.0 |
Risk Free Rate | 2.45 | %
2018 Option Grant
Expected Volatility | 30.0 | %
Expected Term (in years) | 3.32 |
Risk Free Rate | 2.8 | %
Schedule of treasury stock purchases and issuances | The following table illustrates the Company’s treasury stock activity for the three months ended December 31, 2018:
(in thousands, except share amounts) |  |  |
| Shares |  | Cost
Balance as of September 30, 2018 | 216,188 |  |  | $ | 7,536 |
Purchased | 752,234 |  |  | 25,576 |
Issued to employees and directors | (7,072 | ) |  | (295 | )
Balance as of December 31, 2018 | 961,350 |  |  | $ | 32,817 |

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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=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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