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REPORTABLE SEGMENTS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 54,143,638 | $ 56,007,937 | $ 58,044,743 | $ 36,043,295 | $ 34,144,942 | $ 33,478,347 | $ 36,883,312 | $ 33,101,657 | $ 204,239,613 | $ 137,608,258 | $ 144,567,951
Operating profit |  |  |  |  |  |  |  |  | 12,276,701 | 11,135,872 | 8,027,728
Interest expense |  |  |  |  |  |  |  |  | (976,512) | (121,500) | (185,475)
Other income |  |  |  |  |  |  |  |  | 154,753 | 209,043 | 178,722
Income before income taxes |  |  |  |  |  |  |  |  | 11,454,942 | 11,223,415 | 8,020,975
Assets | 176,458,397 |  |  |  | 124,198,396 |  |  |  | 176,458,397 | 124,198,396 | 121,738,559
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,719,185 | 3,814,393 | 3,921,438
Capital expenditures before currency translation adjustment |  |  |  |  |  |  |  |  | 2,756,709 | 2,820,759 | 2,500,377
Currency translation adjustment |  |  |  |  |  |  |  |  | 6,240 | (8,889) | 25,020
Capital expenditures |  |  |  |  |  |  |  |  | 2,762,949 | 2,863,470 | 2,538,236
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | 116,679,690 |  |  |  | 100,246,515 |  |  |  | 116,679,690 | 100,246,515 | 104,045,708
Operating Segments [Member] | Industrial Hardware [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 115,273,233 | 61,058,871 | 61,338,812
Operating profit |  |  |  |  |  |  |  |  | 5,126,128 | 5,683,730 | 4,314,149
Assets | 44,828,458 |  |  |  | 32,278,281 |  |  |  | 44,828,458 | 32,278,281 | 30,425,348
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,526,460 | 1,468,904 | 1,580,741
Capital expenditures before currency translation adjustment |  |  |  |  |  |  |  |  | 1,151,868 | 648,516 | 1,479,984
Operating Segments [Member] | Security Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 60,976,998 | 57,255,101 | 56,598,487
Operating profit |  |  |  |  |  |  |  |  | 6,099,777 | 5,677,264 | 3,798,115
Assets | 53,724,837 |  |  |  | 49,520,708 |  |  |  | 53,724,837 | 49,520,708 | 52,688,497
Depreciation and amortization |  |  |  |  |  |  |  |  | 964,873 | 980,048 | 1,010,262
Capital expenditures before currency translation adjustment |  |  |  |  |  |  |  |  | 705,178 | 1,018,371 | 388,377
Operating Segments [Member] | Metal Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 27,989,382 | 19,294,286 | 26,630,652
Operating profit |  |  |  |  |  |  |  |  | 1,050,796 | (225,122) | (84,536)
Assets | 18,126,395 |  |  |  | 18,447,526 |  |  |  | 18,126,395 | 18,447,526 | 20,931,863
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,227,852 | 1,365,441 | 1,330,435
Capital expenditures before currency translation adjustment |  |  |  |  |  |  |  |  | 899,663 | 1,153,872 | 632,016
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 3,481,764 | 3,354,207 | 3,425,976
Intersegment Eliminations [Member] | Industrial Hardware [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 524,536 | 637,405 | 595,596
Intersegment Eliminations [Member] | Security Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 2,935,797 | 2,716,802 | 2,813,576
Intersegment Eliminations [Member] | Metal Products [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 21,431 | 0 | 16,804
General Corporate [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | 59,778,707 |  |  |  | 23,951,881 |  |  |  | 59,778,707 | 23,951,881 | 17,692,851
Capital expenditures |  |  |  |  |  |  |  |  | 0 | 51,600 | 12,839
Reportable Geographical Components [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 178,124,818 | 117,679,860 | 126,115,036
Assets | 153,712,643 |  |  |  | 107,031,435 |  |  |  | 153,712,643 | 107,031,435 | 106,662,743
Reportable Geographical Components [Member] | Foreign [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 26,114,795 | 19,928,398 | 18,452,915
Assets | $ 22,745,754 |  |  |  | $ 17,166,961 |  |  |  | $ 22,745,754 | $ 17,166,961 | $ 15,075,816

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