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Statements of changes in Stockholders' Equity (Deficit) - USD ($)
Common Stock
Common Class A
Common Stock
Common Class C
Additional Paid-in Capital
AOCI Attributable to Parent
Retained Earnings
Treasury Stock
Total
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2016 $ 27,638,012 $ 3,804,458 $ 34,813,246 $ 264,822 $ 67,409,204 $ (1,370,611) $ 132,559,131
Net earnings 0 0 0 0 14,112,934 0 14,112,934
Other comprehensive income, net of income tax 0 0 0 338,348 0 0 338,348
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount 0 0 395,603 0 0 0 395,603
Proceeds from stock options exercised 16,366 206,804 (213,323) 0 0 0 9,847
Benefit plans funded with treasury stock 0 0 712,591 0 0 822,270 1,534,861
Payments to acquire treasury stock 0 0 0 0 0 (382,734) (382,734)
Stock dividends 1,385,270 198,992 2,416,925 0 (4,001,187) 0 0
Conversion Class C to Class A 31,506 (31,506) 0 0 0 0 0
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2017 29,071,154 4,178,748 38,125,042 603,170 77,520,951 (931,075) 148,567,990
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)       (603,170) 603,170   0
Net earnings 0 0 0 0 21,686,079 0 21,686,079
Other comprehensive income, net of income tax 0 0 0 (2,823) 0 0 (2,823)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount 0 0 237,123 0 0 0 237,123
Proceeds from stock options exercised 76,946 0 (19,534) 0 0 0 57,412
Benefit plans funded with treasury stock 0 0 540,713 0 0 940,200 1,480,913
Payments to acquire treasury stock 0 0 0 0 0 (215,521) (215,521)
Stock dividends 1,461,120 208,914 2,938,434 0 (4,608,468) 0 0
Conversion Class C to Class A 376 (376) 0 0 0 0 0
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2018 $ 30,609,596 $ 4,387,286 $ 41,821,778 $ (2,823) $ 95,201,732 $ (206,396) $ 171,811,173