CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) |
Total |
Cumulative Effect, Period of Adoption, Adjustment |
Additional Paid-in Capital |
Treasury Stock |
Retained Earnings |
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
|
Class A Common Stock
Common Stock
|
Class B Common Stock
Common Stock
|
|---|---|---|---|---|---|---|---|---|
| Beginning balance (in shares) at Sep. 30, 2018 | 11,950,000 | 42,387,571 | ||||||
| Beginning balance at Sep. 30, 2018 | $ 299,469,000 | $ 242,493,000 | $ (15,603,000) | $ 72,525,000 | $ 12,000 | $ 42,000 | ||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Conversion of Class B common stock to Class A common stock (in shares) | 20,355,202 | (20,355,202) | ||||||
| Conversion of Class B common stock to Class A common stock | $ 20,000 | $ (20,000) | ||||||
| Issuance of stock (in shares) | 292,534 | |||||||
| Stock option exercise | 3,000 | 3,000 | $ 74,592 | |||||
| Equity-based compensation expense | 957,000 | 957,000 | ||||||
| Net income | 43,121,000 | 43,121,000 | ||||||
| Ending balance (in shares) at Sep. 30, 2019 | 32,597,736 | 22,106,961 | ||||||
| Ending balance at Sep. 30, 2019 | $ 343,550,000 | $ (222,000) | 243,452,000 | (15,603,000) | 115,646,000 | $ (222,000) | $ 33,000 | $ 22,000 |
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201802Member | |||||||
| Conversion of Class B common stock to Class A common stock (in shares) | 1,278,148 | (1,278,148) | ||||||
| Conversion of Class B common stock to Class A common stock | $ 1,000 | $ (1,000) | ||||||
| Equity-based compensation expense | $ 1,570,000 | 1,570,000 | ||||||
| Net income | 40,297,000 | 40,297,000 | ||||||
| Ending balance (in shares) at Sep. 30, 2020 | 33,875,884 | 20,828,813 | ||||||
| Ending balance at Sep. 30, 2020 | $ 385,195,000 | $ 245,022,000 | $ (15,603,000) | $ 155,721,000 | $ 34,000 | $ 21,000 |
| X | ||||||||||
- Definition Reclassification Of Common Stock ,Value. No definition available.
|
| X | ||||||||||
- Definition Reclassification Of Common Stock Shares No definition available.
|
| X | ||||||||||
- Definition Indicates amendment to accounting standards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Value of stock issued as a result of the exercise of stock options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|