Statements Of Stockholders' Equity - USD ($) | Total | Class A voting Common Stock [Member] | Capital in Excess of Par Value [Member] | Deferred Directors' Compensation [Member] | Retained Earnings [Member] | Treasury Stock [Member] |
Balances at Sep. 30, 2017 | $ 116,707,539 | $ 280,938 | $ 2,726,444 | $ 3,459,909 | $ 113,330,216 | $ (3,089,968) |
Balances, shares at Sep. 30, 2017 | | 16,863,004 | | | | |
Balances, Treasury shares at Sep. 30, 2017 | | | | | | (184,988) |
Net income (loss) | 13,784,939 | | | | 13,784,939 | |
Purchase of treasury stock | (272,100) | | | | | $ (272,100) |
Purchase of treasury stock, shares | | | | | | (13,404) |
Issuance of treasury shares to ESOP | 6,735 | | 2,009 | | | $ 4,726 |
Issuance of treasury shares to ESOP, shares | | | | | | 283 |
Restricted stock awards | 194,050 | | 194,050 | | | |
Dividends | (1,347,608) | | | | (1,347,608) | |
Distribution of restricted stock to officers and directors | 734 | | (735,965) | | | $ 736,699 |
Distribution of restricted stock to officers and directors, shares | | | | | | 44,065 |
Increase in deferred directors' compensation charged to expense | 108,384 | | | 108,384 | | |
Balances at Dec. 31, 2017 | 129,182,673 | $ 280,938 | 2,186,538 | 3,568,293 | 125,767,547 | $ (2,620,643) |
Balances, shares at Dec. 31, 2017 | | 16,863,004 | | | | |
Balances, Treasury shares at Dec. 31, 2017 | | | | | | (154,044) |
Balances at Sep. 30, 2017 | 116,707,539 | $ 280,938 | 2,726,444 | 3,459,909 | 113,330,216 | $ (3,089,968) |
Balances, shares at Sep. 30, 2017 | | 16,863,004 | | | | |
Balances, Treasury shares at Sep. 30, 2017 | | | | | | (184,988) |
Net income (loss) | 14,855,115 | | | | | |
Balances at Mar. 31, 2018 | 130,469,122 | $ 281,481 | 2,566,003 | 2,819,516 | 126,837,723 | $ (2,035,601) |
Balances, shares at Mar. 31, 2018 | | 16,895,603 | | | | |
Balances, Treasury shares at Mar. 31, 2018 | | | | | | (119,650) |
Balances at Dec. 31, 2017 | 129,182,673 | $ 280,938 | 2,186,538 | 3,568,293 | 125,767,547 | $ (2,620,643) |
Balances, shares at Dec. 31, 2017 | | 16,863,004 | | | | |
Balances, Treasury shares at Dec. 31, 2017 | | | | | | (154,044) |
Net income (loss) | 1,070,176 | | | | 1,070,176 | |
Restricted stock awards | 153,788 | | 153,788 | | | |
Distribution of restricted stock to officers and directors | 43 | | (43,435) | | | $ 43,478 |
Distribution of restricted stock to officers and directors, shares | | | | | | 2,556 |
Distribution of deferred directors' compensation | | $ 543 | 269,112 | (811,219) | | $ 541,564 |
Distribution of deferred directors' compensation, shares | | 32,599 | | | | 31,838 |
Increase in deferred directors' compensation charged to expense | 62,442 | | | 62,442 | | |
Balances at Mar. 31, 2018 | 130,469,122 | $ 281,481 | 2,566,003 | 2,819,516 | 126,837,723 | $ (2,035,601) |
Balances, shares at Mar. 31, 2018 | | 16,895,603 | | | | |
Balances, Treasury shares at Mar. 31, 2018 | | | | | | (119,650) |
Balances at Sep. 30, 2018 | $ 128,765,205 | $ 281,502 | 2,824,691 | 2,950,405 | 125,266,945 | $ (2,558,338) |
Balances, shares at Sep. 30, 2018 | | 16,896,881 | | | | |
Balances, Treasury shares at Sep. 30, 2018 | (145,467) | | | | | (145,467) |
Net income (loss) | $ 12,735,940 | | | | 12,735,940 | |
Purchase of treasury stock | (1,140,559) | | | | | $ (1,140,559) |
Purchase of treasury stock, shares | | | | | | (74,457) |
Restricted stock awards | 159,469 | | 159,469 | | | |
Dividends | (1,347,789) | | | | (1,347,789) | |
Distribution of restricted stock to officers and directors | 160 | $ 7 | (159,869) | | | $ 160,022 |
Distribution of restricted stock to officers and directors, shares | | 425 | | | | 9,194 |
Distribution of deferred directors' compensation | | | (8) | 8 | | |
Increase in deferred directors' compensation charged to expense | 80,287 | | | 80,287 | | |
Balances at Dec. 31, 2018 | 139,252,713 | $ 281,509 | 2,824,283 | 3,030,700 | 136,655,096 | $ (3,538,875) |
Balances, shares at Dec. 31, 2018 | | 16,897,306 | | | | |
Balances, Treasury shares at Dec. 31, 2018 | | | | | | (210,730) |
Balances at Sep. 30, 2018 | $ 128,765,205 | $ 281,502 | 2,824,691 | 2,950,405 | 125,266,945 | $ (2,558,338) |
Balances, shares at Sep. 30, 2018 | | 16,896,881 | | | | |
Balances, Treasury shares at Sep. 30, 2018 | (145,467) | | | | | (145,467) |
Net income (loss) | $ 10,804,606 | | | | | |
Balances at Mar. 31, 2019 | $ 134,832,789 | $ 281,509 | 2,830,224 | 2,415,569 | 134,723,381 | $ (5,417,894) |
Balances, shares at Mar. 31, 2019 | | 16,897,306 | | | | |
Balances, Treasury shares at Mar. 31, 2019 | (329,065) | | | | | (329,065) |
Balances at Dec. 31, 2018 | $ 139,252,713 | $ 281,509 | 2,824,283 | 3,030,700 | 136,655,096 | $ (3,538,875) |
Balances, shares at Dec. 31, 2018 | | 16,897,306 | | | | |
Balances, Treasury shares at Dec. 31, 2018 | | | | | | (210,730) |
Net income (loss) | (1,931,334) | | | | (1,931,334) | |
Purchase of treasury stock | (2,827,126) | | | | | $ (2,827,126) |
Purchase of treasury stock, shares | | | | | | (175,175) |
Restricted stock awards | 286,852 | | 286,852 | | | |
Dividends | (381) | | | | (381) | |
Distribution of restricted stock to officers and directors | 75 | | (73,069) | | | $ 73,144 |
Distribution of restricted stock to officers and directors, shares | | | | | | 4,441 |
Distribution of deferred directors' compensation | (3) | | (207,842) | (667,124) | | $ 874,963 |
Distribution of deferred directors' compensation, shares | | | | | | 52,399 |
Increase in deferred directors' compensation charged to expense | 51,993 | | | 51,993 | | |
Balances at Mar. 31, 2019 | $ 134,832,789 | $ 281,509 | $ 2,830,224 | $ 2,415,569 | $ 134,723,381 | $ (5,417,894) |
Balances, shares at Mar. 31, 2019 | | 16,897,306 | | | | |
Balances, Treasury shares at Mar. 31, 2019 | (329,065) | | | | | (329,065) |