Schedule of Segment Reporting Information, by Segment | Fastener Assembly Equipment Other Consolidated Three Months Ended March 31, 2017: Net sales $ 8,736,188 $ 747,139 0 $ 9,483,327 Depreciation 269,837 24,390 8,970 303,197 Segment operating profit 1,191,547 245,620 0 1,437,167 Selling and administrative expenses 0 0 (680,928) (680,928) Interest income 0 0 14,683 14,683 Income before income taxes $ 770,922 Capital expenditures 174,789 2,525 0 177,314 Segment assets: Accounts receivable, net 5,797,234 376,550 0 6,173,784 Inventories, net 4,075,856 1,211,586 0 5,287,442 Property, plant and equipment, net 10,187,799 1,542,837 594,039 12,324,675 Other assets 0 0 7,956,280 7,956,280 $ 31,742,181 Three Months Ended March 31, 2016: Net sales $ 8,447,329 $ 1,149,066 0 $ 9,596,395 Depreciation 260,823 21,582 16,950 299,355 Segment operating profit 1,226,361 433,199 0 1,659,560 Selling and administrative expenses 0 0 (685,262) (685,262) Interest income 0 0 8,759 8,759 Income before income taxes $ 983,057 Capital expenditures 409,785 181,368 8,228 599,381 Segment assets: Accounts receivable, net 5,701,331 410,586 0 6,111,917 Inventories, net 3,951,985 967,719 0 4,919,704 Property, plant and equipment, net 9,858,184 1,628,796 511,489 11,998,469 Other assets 0 0 7,418,596 7,418,596 $ 30,448,686 |