Unique Fabricating (UFABQ) 10-K 7 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2018	Mar. 01, 2019	Jul. 01, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Unique Fabricating, Inc.
Entity Central Index Key	1,617,669
Document Type	10-K
Document Period End Date	Dec. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		9,779,147
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	true
Entity Well-Known Seasoned Issuer	No
Entity Voluntary Filer	No
Entity Public Float			$ 59.1
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 30, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 1,409,593	$ 1,430,937
Accounts receivable – net	30,831,182	27,203,296
Inventory – net	16,285,507	16,330,084
Prepaid expenses and other current assets:
Prepaid expenses and other	2,511,486	3,962,012
Refundable taxes	983,073	646,253
Total current assets	52,020,841	49,572,582
Property, Plant, and Equipment – Net	25,077,745	22,975,401
Goodwill	28,871,179	28,871,179
Intangible Assets	15,568,383	19,635,782
Other assets
Investments – at cost	1,054,120	1,054,120
Deposits and other assets	198,854	353,719
Deferred tax asset	496,181	342,552
Total assets	123,287,303	122,805,335
Current Liabilities
Accounts payable	11,465,222	11,708,175
Current maturities of long-term debt	3,350,000	3,799,998
Income taxes payable	40,634	348,910
Accrued compensation	2,848,282	2,840,559
Other accrued liabilities	1,432,109	1,027,489
Total current liabilities	19,136,247	19,725,131
Long-term debt – net of current portion	34,667,768	27,288,846
Line of credit	17,904,869	22,476,525
Other long-term liabilities	395,154	0
Deferred tax liability	2,295,105	2,432,754
Total liabilities	74,399,143	71,923,256
Stockholders’ Equity
Common stock, $0.001 par value – 15,000,000 shares authorized and 9,779,147 and 9,757,563 issued and outstanding at December 30, 2018 and December 31, 2017, respectively	9,780	9,758
Additional paid-in-capital	45,881,848	45,712,568
Retained earnings	2,996,532	5,159,753
Total stockholders’ equity	48,888,160	50,882,079
Total liabilities and stockholders’ equity	$ 123,287,303	$ 122,805,335

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	9,779,147	9,757,563
Common stock, shares outstanding (in shares)	9,779,147	9,757,563

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Statement [Abstract]
Net Sales	$ 174,909,741	$ 175,287,982	$ 170,462,953
Cost of Sales	135,575,004	135,234,448	130,918,486
Gross Profit	39,334,737	40,053,534	39,544,467
Selling, General, and Administrative Expenses	29,780,956	29,766,864	27,524,453
Provision for estimated expenses incurred during the year	1,155,910	0	35,054
Operating Income	8,397,871	10,286,670	11,984,960
Non-operating Income (Expense)
Investment income	50,169	0	0
Other income	(109,142)	78,805	91,755
Interest expense	(3,778,328)	(2,745,904)	(2,134,976)
Total non-operating expense	(3,837,301)	(2,667,099)	(2,043,221)
Income – Before income taxes	4,560,570	7,619,571	9,941,739
Income Tax Expense	861,969	1,132,880	3,257,619
Net Income	$ 3,698,601	$ 6,486,691	$ 6,684,120
Net Income per share
Basic (in dollars per share)	$ 0.38	$ 0.67	$ 0.69
Diluted (in dollars per share)	0.37	0.66	0.68
Cash dividends declared per share (in dollars per share)	$ 0.6	$ 0.60	$ 0.6

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($)	Total	Common Stock	Additional Paid-In Capital	Retained Earnings
Beginning balance (in shares) at Jan. 03, 2016	9,591,860
Beginning balance at Jan. 03, 2016	$ 48,013,124	$ 9,592	$ 44,352,188	$ 3,651,344
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,684,120			6,684,120
Stock option expense	$ 166,476		166,476
Exercise of warrants and options for common stock (in shares)	57,115
Exercise of warrants and options for common stock	$ 115,975	57	115,918
Common stock issued for purchase of Intasco USA, Inc. (in shares)	70,797
Common stock issued for purchase of Intasco USA, Inc.	$ 890,726	71	890,655
December 31, 2017	$ (5,811,858)			(5,811,858)
Ending balance (in shares) at Jan. 01, 2017	9,719,772
Ending balance at Jan. 01, 2017	$ 50,058,563	9,720	45,525,237	4,523,606
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,486,691			6,486,691
Stock option expense	$ 150,368		150,368
Exercise of warrants and options for common stock (in shares)	37,791
Exercise of warrants and options for common stock	$ 37,001	38	36,963
December 31, 2017	$ (5,850,544)			(5,850,544)
Ending balance (in shares) at Dec. 31, 2017	9,757,563
Ending balance at Dec. 31, 2017	$ 50,882,079	9,758	45,712,568	5,159,753
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,698,601			3,698,601
Stock option expense	$ 131,302		131,302
Exercise of warrants and options for common stock (in shares)	21,584
Exercise of warrants and options for common stock	$ 38,000	22	37,978
December 31, 2017	$ (5,861,822)			(5,861,822)
Ending balance (in shares) at Dec. 30, 2018	9,779,147
Ending balance at Dec. 30, 2018	$ 48,888,160	$ 9,780	$ 45,881,848	$ 2,996,532

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Cash Flows from Operating Activities
Net income	$ 3,698,601	$ 6,486,691	$ 6,684,120
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,630,142	6,319,975	5,501,674
Amortization of debt issuance costs	147,291	148,948	127,556
(Gain) loss on sale of assets	(137,793)	63,013	(126,631)
Loss on extinguishment of debt	59,110	0	60,202
Bad debt adjustment	12,939	128,475	(274,364)
Loss (gain) on derivative instruments	451,511	(228,387)	22,193
Stock option expense	131,302	150,368	166,476
Deferred income taxes	(291,278)	(1,552,502)	(1,165,649)
Changes in operating assets and liabilities that provided (used) cash:
Accounts receivable	(3,640,825)	(443,826)	(3,987,313)
Inventory	44,577	401,524	339,784
Prepaid expenses and other assets	1,212,214	(1,765,990)	(1,291,654)
Accounts payable	1,008,447	(1,705,663)	1,329,599
Accrued and other liabilities	104,067	(193,762)	375,280
Net cash provided by operating activities	9,430,305	7,808,864	7,761,273
Cash Flows from Investing Activities
Purchases of property and equipment	(5,393,817)	(4,140,135)	(3,362,014)
Proceeds from sale of property and equipment	904,237	51,847	2,187,366
Acquisition of Intasco, net of cash acquired	0	0	(21,030,795)
Working capital adjustment from acquisition of Intasco	0	0	212,823
Net cash used in investing activities	(4,489,580)	(4,088,288)	(21,992,620)
Cash Flows from Financing Activities
Net change in bank overdraft	(1,251,400)	(37,978)	548,892
Proceeds from debt	10,131,574	0	32,000,000
Payments on term loans	(2,962,477)	(3,374,545)	(2,444,071)
Payments on (proceeds from) revolving credit facilities, net	(4,421,908)	6,230,892	5,690,487
Debt issuance costs	(634,036)	0	(514,441)
Pay-off of old senior credit facility term debt	0	0	(15,375,000)
Proceeds from exercise of stock options and warrants	38,000	37,001	115,975
Distribution of cash dividends	(5,861,822)	(5,850,544)	(5,811,858)
Net cash (used in) provided by financing activities	(4,962,069)	(2,995,174)	14,209,984
Net Decrease in Cash and Cash Equivalents	(21,344)	725,402	(21,363)
Cash and Cash Equivalents – Beginning of period	1,430,937	705,535	726,898
Cash and Cash Equivalents – End of period	1,409,593	1,430,937	705,535
Supplemental Disclosure of Cash Flow Information – Cash paid for
Interest	3,575,279	2,566,956	1,552,619
Income taxes	1,339,290	2,231,901	3,750,845
Supplemental Disclosure of Cash Flow Information – Non cash investing and financing activities for
Common stock issued for purchase of Intasco USA, Inc.	$ 0	$ 0	$ 890,726

Nature of Business and Signific

Nature of Business and Significant Accounting Policies	12 Months Ended
	Dec. 30, 2018
Accounting Policies [Abstract]
Nature of Business and Significant Accounting Policies	Nature of Business and Significant Accounting Policies Nature of Business — UFI Acquisition, Inc. (“UFI”), a Delaware corporation, was formed on January 14, 2013, for the purpose of acquiring Unique Fabricating, Inc. and its subsidiaries (“Unique Fabricating”) (collectively, the “Company” or “Unique”) on March 18, 2013. The Company operates as one operating and reporting segment to fabricate and broker foam and rubber products, which are primarily sold to original equipment manufacturers (“OEMs”) and tiered suppliers in the automotive, appliance, water heater and heating, ventilation, and air conditioning (“HVAC”) industries. In September 2014, UFI changed its name to Unique Fabricating, Inc. which is now the parent company of the consolidated group. As a result of the name change, the subsidiary previously named Unique Fabricating, Inc. became Unique Fabricating NA, Inc. Basis of Presentation — The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The accompanying consolidated financial statements have been prepared by the Company, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Principles of Consolidation —The consolidated financial statements include the accounts of the Company and all subsidiaries over which the Company exercises control. All intercompany transactions and balances have been eliminated upon consolidation. Fiscal Years — The Company’s year-end periods end on the Sunday closest to the end of the calendar year-end period. The 52-week fiscal year periods for 2018, 2017, and 2016 ended on December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. Cash and Cash Equivalents — The Company considers all highly liquid investments with an original maturity of three months or less to be cash and cash equivalents. Accounts Receivable — Accounts receivable are stated at the invoiced amount and do not bear interest. The allowance for doubtful accounts is management’s best estimate of the amount of probable credit losses in the existing accounts receivable. Management determines the allowance based on historical write off experience and an understanding of individual customer payment history and financial condition. Management reviews the allowance for doubtful accounts at regular intervals. Account balances are charged off against the allowance when management determines it is probable the receivable will not be recovered. The allowance for doubtful accounts was $684,996 and $768,500 at December 30, 2018 and December 31, 2017 , respectively. Inventory — Inventory is stated at the lower of cost or market, with cost determined on the first in, first out method (FIFO). Inventory acquired as part of a business combination is recorded at its estimated fair value at the time of the business combination. The Company periodically evaluates inventory for obsolescence, excess quantities, slow moving goods and other impairments of value and establishes reserves for any identified impairments. Valuation of Long-Lived Assets — The carrying value of long-lived assets held for use is periodically evaluated when events or circumstances warrant such a review. The carrying value of a long-lived asset held for use is considered impaired when the anticipated separately identifiable undiscounted cash flows from the asset are less than the carrying value of the asset. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of the long-lived asset. The Company determined that no impairment indicators were present and all originally assigned useful lives remained appropriate during the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. Property, Plant, and Equipment — Property, plant, and equipment purchases are recorded at cost. Property, plant, and equipment acquired as part of a business combination are recorded at estimated fair value at the time of the business combination. Depreciation is calculated principally using the straight line method over the estimated useful life of each asset. Leasehold improvements are depreciated over the shorter of the estimated useful life of the asset or the period of the related leases. Upon retirement or disposal, the initial cost or valuation and accumulated depreciation are removed from the accounts, and any gain or loss is included in net income. Repair and maintenance costs are expensed as incurred. Intangible Assets — The Company does not hold any intangible assets with indefinite lives. Identifiable intangible assets recognized as part of a business combination are recorded at their estimated fair value at the time of the business combination. Amortizable intangible assets are reviewed for impairment whenever events or circumstances indicate that the related carrying amount may be impaired. The remaining useful lives of intangible assets are reviewed annually to determine whether events and circumstances warrant a revision to the remaining period of amortization. The Company determined that no impairment indicators were present and all originally assigned useful lives remained appropriate during the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. Goodwill — Goodwill represents the excess of the acquisition cost of consideration transferred over the fair value of the identifiable net assets acquired and liabilities assumed from business combinations at the date of acquisition. Goodwill is not amortized, but rather is assessed at least on an annual basis for impairment. If it is determined that it is more likely than not that the fair value is greater than the carrying value of a reporting unit then a qualitative assessment may be used for the annual impairment test. Otherwise, a one-step process is used which requires estimating the fair value of each reporting unit compared to its carrying value. If the carrying value exceeds the estimated fair value, goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The Company has one reporting and operating unit for goodwill testing purposes. There were no impairment charges recognized during the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. The Company performed the annual quantitative assessment as of December 30, 2018, utilizing a combination of the income and market approaches. The results of the quantitative analysis performed indicated the fair value of the reporting unit exceeded the carrying value by approximately 10.0% . Key assumptions used in the analysis were a discount rate of 13.0% , EBITDA margin and a terminal growth rate of 3.0% . Future events and changing market conditions may, however, lead the Company to reevaluate the assumptions that have been used to test for goodwill impairment, including key assumptions used in the expected EBITDA margins, cash flows and discount rates, as well as other assumptions with respect to matters out of the Company’s control, such as market multiple comparables. Debt Issuance Costs — Debt issuance costs represent legal, consulting, and other financial costs associated with debt financing and are reported netted against the related debt instrument. Amounts paid to or on behalf of lenders are presented as debt discount, as a reduction of the noted debt instrument. Debt issuance costs on term debt are amortized using the straight lines basis over the term of the related debt (which is immaterially different from the required effective interest method) while those related to revolving debt are amortized using a straight line basis over the term of the related debt. At December 30, 2018 and December 31, 2017 , debt issuance costs were $381,793 and $232,045 , respectively, while amounts paid to or on behalf of lenders presented as debt discounts were $482,232 and $242,059 , respectively. On November 8, 2018, the Company amended its current Credit Agreement (the “Amended and Restated Credit Agreement”), which increased its term loan debt and is further described in Note 6. The Company reviewed this amendment for extinguishment accounting and concluded that $59,110 of the remaining $172,600 debt issuance costs not amortized on the old revolving debt facility qualified for extinguishment accounting and were recognized as a loss on extinguishment immediately. The remaining unamortized debt issuance costs not extinguished on the old revolving debt facility and all of the of remaining unamortized debt issuance costs on the old term loans did not meet extinguishment accounting and therefore were carried forward to the new revolving debt facility and term loans. Amortization expense has been recognized as a component of interest expense which includes both debt issuance costs and debt discounts in the amounts of $147,291 for the 52 weeks ended December 30, 2018 , $148,948 for the 52 weeks ended December 31, 2017 , and $127,556 for the 52 weeks ended January 1, 2017 , respectively. Investments — Investments in entities in which the Company has less than a 20 percent interest or is not able to exercise significant influence are carried at cost. Cost basis investments acquired are recorded at cost. Dividends received are included in income, except for those dividends received in excess of the Company’s proportionate share of accumulated earnings, which are applied as a reduction of the cost of the investment. Impairment losses due to a decline in the value of the investment that is other than temporary are recognized when incurred. Dividend income of $50,169 , $0 and $0 was recognized for the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. No impairment loss was recognized for the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively. Accounts Payable — Under the Company’s cash management system, checks issued but not yet presented to the Company’s bank frequently result in overdraft balances for accounting purposes and are classified as accounts payable on the consolidated balance sheets. Accounts payable included $1,802,712 and $2,919,460 of checks issued in excess of available cash balances at December 30, 2018 and December 31, 2017 , respectively. Stock Based Compensation — The Company accounts for its stock based compensation using the fair value of the award estimated at the grant date of the award. The Company estimates the fair value of awards, consisting of stock options, using the Black Scholes option pricing model. Compensation expense is recognized in earnings using the straight line method over the vesting period, which represents the requisite service period. Revenue Recognition — Revenue is recognized by the Company upon shipment to customers when the customer takes ownership and assumes the risk of loss, collection of the relevant receivable is probable, persuasive evidence of an arrangement exists, and the sale price is fixed and determinable. Provisions for discounts and rebates to customers, estimated returns and allowances, and other adjustments are provided for in the same period the related sales are recorded. Shipping and Handling — Shipping and handling costs are included in cost of sales as they are incurred. Income Taxes — A current tax liability or asset is recognized for the estimated taxes payable or refundable on tax returns for the period. Deferred tax liabilities or assets are recognized for the estimated future tax effects of temporary differences between financial reporting and tax accounting measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The Company also evaluates the need for valuation allowances to reduce the deferred tax assets to realizable amounts. Management evaluates all positive and negative evidence and uses judgment regarding past and future events, including operating results, to help determine when it is more likely than not that all or some portion of the deferred tax assets may not be realized. When appropriate, a valuation allowance is recorded against deferred tax assets to reserve for future tax benefits that may not be realized. The Company recognizes the benefit of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement with the relevant tax authority. The Company assesses all tax positions for which the statute of limitations remain open. The Company had no unrecognized tax benefits as of December 30, 2018 , December 31, 2017 , and January 1, 2017 . There were no penalties or interest recorded during the 52 weeks ended December 30, 2018 , December 31, 2017 , or January 1, 2017 Foreign Currency Adjustments — The Company’s functional currency for all operations worldwide is the United States dollar. Nonmonetary assets and liabilities of foreign operations are remeasured at historical rates and monetary assets and liabilities are remeasured at exchange rates in effect at the end of each reporting period. Income statement accounts are remeasured at average exchange rates for the year. Gains and losses from translation of foreign currency financial statements into United States dollars are classified in other income in the consolidated statements of operations. Concentration Risks — The Company is exposed to various significant concentration risks as follows: Customer and Credit — During the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , the Company’s sales were derived from customers principally engaged in the North American automotive industry. Company sales directly and indirectly to General Motors Company (“GM”), Fiat Chrysler Automobiles (“FCA”), and Ford Motor Company (“Ford”), as a percentage of total net sales were: 15 , 16 , and 11 percent, respectively, during the 52 weeks ended December 30, 2018 ; 14 , 13 , and 11 percent, respectively, during the 52 weeks ended December 31, 2017 ; and 15 , 11 , and 12 percent, respectively, during the 52 weeks ended January 1, 2017 . No Tier 1 suppliers represented more than 10 percent of direct Company sales for any period noted above. GM accounted for 14 and 11 percent of direct accounts receivable as of December 30, 2018 and December 31, 2017 , respectively. Labor Markets — At December 30, 2018 , of the Company’s hourly plant employees working in the United States manufacturing facilities, 33 percent were covered under a collective bargaining agreement which expires in August 2019 while another 6 percent were covered under a separate agreement that expires in February 2020. Foreign Currency Exchange — The expression of assets and liabilities in a currency other than the functional currency, which is the United States dollar, gives rise to exchange gains and losses when such assets and obligations are paid in another currency. Foreign currency exchange rate adjustments (i.e., differences between amounts recorded and actual amounts owed or paid) are reported in the consolidated statements of operations as the foreign currency fluctuations occur. Foreign currency exchange rate adjustments are reported in the consolidated statements of cash flows using the exchange rates in effect at the time of the cash flows. At December 30, 2018 , the Company’s exposure to assets and liabilities denominated in another currency was not significant. To the extent there is a fluctuation in the exchange rates, the amount of local currency to be paid or received to satisfy foreign currency obligations in 2019 may increase or decrease. International Operations — The Company manufactures and sells products outside of the United States primarily in Mexico and Canada. Foreign operations are subject to various political, economic and other risks and uncertainties inherent in foreign countries. Among other risks, the Company’s operations are subject to the risks of: restrictions on transfers of funds; export duties, quotas, and embargoes; domestic and international customs and tariffs; changing taxation policies; foreign exchange restrictions; political conditions; and governmental regulations. During the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , 17 , 15 , and 12 percent, respectively, of the Company’s production occurred in Mexico. During the 52 weeks ended December 30, 2018 , December 31, 2017 , and January 1, 2017 , 10 , 9 , and 6 percent, respectively, of the Company's production occurred in Canada. Sales derived from customers located in Mexico, Canada, and other foreign countries were 17 , 10 , and 2 percent, respectively during the 52 weeks ended December 30, 2018 , 15 , 10 , and 1 percent, respectively, during the 52 weeks ended December 31, 2017 , and 12 , 8 , and 1 percent, respectively during the 52 weeks ended January 1, 2017 , of the Company’s total sales. Derivative financial instruments — All derivative instruments are required to be reported on the consolidated balance sheets at fair value unless the transactions qualify and are designated as normal purchases or sales. Changes in fair value are reported currently through earnings unless they meet hedge accounting criteria. See Note 7 for further information regarding the Company's derivative instrument makeup. Use of Estimates — The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Recently Issued Accounting Pronouncements — In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . This ASU supersedes most of the existing guidance on revenue recognition in ASC Topic 605, Revenue Recognition, and establishes a broad principle that would require an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity identifies the contract with a customer, identifies the separate performance obligations in the contract, determines the transaction price, allocates the transaction price to the separate performance obligations and recognizes revenue when each separate performance obligation is satisfied. In August 2015, the FASB issued ASU 2015-14, Revenue From Contracts with Customers (Topic 606): Deferral of the Effective Date, to defer implementation of ASU 2014-09 by one year. The guidance is now currently effective for fiscal years beginning after December 15, 2018 and is to be applied retrospectively at the entity's election either to each prior reporting period presented or with the cumulative effect of application recognized at the date of initial application. The ASU allows for early adoption for fiscal years beginning after December 15, 2016, however, the Company plans to adopt the new accounting standard ASC 606, Revenue from Contracts with Customers and all the related amendments to all contracts using the modified retrospective method in its first quarter of 2019. To assess the impact of the new standard, the Company analyzed the standard's impact on customer contracts, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from application of the new standard's requirements. The Company reviewed material contracts and related agreements with customers and confirmed that the performance obligations do not change under ASC No. 606. In addition, the Company considered all relevant commercial variables to identify transaction consideration and has concluded there is not a material change in the determination of transaction pricing. Therefore, the Company has concluded that the adoption of the new revenue standards will not have a material impact on its consolidated financial statements as the method for recognizing revenue subsequent to the implementation of ASC No. 606 will not vary significantly from the revenue recognition practices under current GAAP. In January 2016, the FASB issued guidance, together with related, subsequently issued guidance, that addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Among other provisions, the guidance requires certain equity securities to be measured at fair value, with changes in fair value recognized in earnings. For equity securities without readily determinable fair values, entities may elect to measure these securities at cost minus impairment, if any, adjusted for changes in observable prices. The guidance should be applied through a cumulative-effect adjustment to the balance sheet as of the beginning of the year of adoption, except for equity securities without readily determinable fair values, to which the guidance should be applied prospectively. The Company adopted this guidance on January 1, 2018 and concluded this did not have a material effect on the consolidated financial statements. The Company does have a cost method investment in its consolidated financial statements, and there is not a readily determinable value for this investment. In February 2016, the FASB issued ASU 2016-02, Leases, which will supersede the current lease requirements in Topic 840. The ASU requires lessees to recognize a right of use asset and related lease liability for all leases, with a limited exception for short-term leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the statement of operations. Currently, leases are classified as either capital or operating, with only capital leases recognized on the balance sheet. The reporting of lease related expenses in the consolidated statements of operations and cash flows will be generally consistent with current guidance. The ASU is effective for the Company for financial statements issued for fiscal years beginning after December 15, 2019. The Company believes the impact that the adoption of this guidance will have on its consolidated financial statements will be to materially increase assets and liabilities on the consolidated balance sheet, but it is not expected to materially impact the consolidated statements of operations. In January 2017, the FASB issued ASU 2017-4, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, accounting guidance which removes Step 2 of the goodwill impairment test. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The ASU is effective for annual or interim reporting periods beginning after December 15, 2021. Early adoption is permitted. The Company adopted the provisions related to this ASU during fiscal year 2017 and the impact was not material.

Business Combinations

Business Combinations	12 Months Ended
	Dec. 30, 2018
Business Combinations [Abstract]
Business Combinations	Business Combinations The Company intends to continue to selectively pursue opportunistic acquisitions that provide additional products and processes, as well as entrance into new growth markets. There were no new acquisitions for the 52 weeks ended December 30, 2018 and December 31, 2017 . 2016 On April 29, 2016, Unique-Intasco Canada, Inc. (the “Canadian Buyer”), a newly formed subsidiary of the Company, acquired the business and substantially all of the assets of Intasco Corporation, a Canadian based tape manufacturer, for a purchase price of $21,049,045 , in cash paid at closing. On the same date, Unique Fabricating NA, Inc. (the “US Buyer”), an existing subsidiary of the Company, purchased 100% of the outstanding capital stock of Intasco USA, Inc. a United States based tape manufacturer, for a purchase price of $890,726 paid by the issuance of 70,797 shares of the Company's common stock. These shares were issued in reliance upon an exemption from the registration requirements of the Securities Act of 1933, as amended. A portion of the purchase price is being held in escrow to fund the obligations of Intasco Corporation and Intasco USA, Inc., (together “Intasco”) and a related party to indemnify the Canadian Buyer and US Buyer against certain claims, losses, and liabilities. The purchase agreement included a potential purchase price adjustment provision based on the actual working capital acquired on the day of closing as compared to what was originally estimated at closing. On the date of closing, the Company paid an estimated working capital adjustment of $126,047 to Intasco, which is included in the total cash consideration paid above. During August 2016, Intasco paid the Company $212,823 for the actual final working capital adjustment. This final actual working capital settlement is included in the table below. The cash purchase price was paid with borrowings under a new senior credit facility which replaced the Company's existing facility as further described in Note 6. The Company incurred transaction costs of $852,580 related to the acquisition of Intasco. The acquisition significantly broadened the Company's solution offerings, production capabilities, and potentially expanded its reach into new markets. In connection with the business combination, Intasco terminated the leases it had with an affiliated entity for its operating facilities in the United States and Canada and the Company entered into new leases for the same facilities. The terms of the Company's lease in the United States provides for a term of two years with monthly rental payments of $4,000 beginning on May 1, 2016 and $4,080 beginning on May 1, 2017. The terms of the Company's lease in Canada provides for a term of five years with monthly rental payments of $16,750 Canadian dollars beginning on May 1, 2016, $17,085 Canadian dollars beginning on May 1, 2017, and $17,427 Canadian dollars beginning on May 1, 2019. The following table summarizes the acquisition date fair values of the assets acquired and liabilities assumed. Cash $ 18,250 Accounts receivable 2,146,082 Inventory 2,485,781 Other current assets 74,194 Property, plant, and equipment 861,491 Identifiable intangible assets 7,316,694 Accounts payable and accrued liabilities (716,080 ) Deferred tax liabilities (97,622 ) Total identifiable net assets 12,088,790 Goodwill 9,657,221 Total $ 21,746,011 The goodwill arising from the acquisition consisted largely of Intasco's reputation, trained employees, and other unique features that cannot be associated with a specific identifiable asset. Of the total amount of goodwill recognized, $7,267,507 is expected to be deductible for tax purposes. The Company also recognized intangible assets as part of the acquisition which consisted of customer contracts, trade names, and unpatented technology. For further detail of the Company's intangibles please see Note 5. The consolidated operating results for the 52 weeks ended January 1, 2017 included the operating results of Intasco from April 29, 2016. Intasco's revenue included in the accompanying statement of operations for the 52 weeks ended January 1, 2017, totaled $12,501,386 , from the date of the acquisition. Intasco's net income included in the accompanying statement of operations for the 52 weeks ended January 1, 2017, totaled $131,433 , from the date of acquisition.

Inventory

Inventory	12 Months Ended
	Dec. 30, 2018
Inventory Disclosure [Abstract]
Inventory	Inventory Inventory consists of the following: December 30, December 31, Raw materials $ 9,562,962 $ 9,005,335 Work in progress 547,729 578,056 Finished goods 6,174,816 6,746,693 Total inventory $ 16,285,507 $ 16,330,084 The allowance for obsolete inventory was $557,066 and $434,712 at December 30, 2018 and December 31, 2017 , respectively. Included in inventory are assets located in Mexico with a carrying amount of $3,340,748 at December 30, 2018 and $3,173,944 at December 31, 2017 , and assets located in Canada with a carrying amount of $1,177,256 at December 30, 2018 and $1,072,430 at December 31, 2017 . The inventory acquired in the 2016 acquisition of Intasco included a fair value adjustment of $318,518 , At January 1, 2017 , $0 of this fair value adjustment remained in inventory while $318,518 was included in costs of goods sold during the 52 weeks ended January 1, 2017 .

Property, Plant, and Equipment

Property, Plant, and Equipment	12 Months Ended
	Dec. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment	Property, Plant, and Equipment Property, plant, and equipment consists of the following: December 30, December 31, Depreciable Life – Years Land $ 1,663,153 $ 1,663,153 Buildings 6,898,455 7,606,125 23 – 40 Shop equipment 21,165,566 16,654,811 7 – 10 Leasehold improvements 1,130,507 997,277 3 – 10 Office equipment 1,650,626 1,442,082 3 – 7 Mobile equipment 282,805 223,474 3 Construction in progress 1,514,082 1,253,760 Total cost 34,305,194 29,840,682 Accumulated depreciation 9,227,449 6,865,281 Net property, plant, and equipment $ 25,077,745 $ 22,975,401 Depreciation expense was $2,562,743 for the 52 weeks ended December 30, 2018 , $2,197,415 for the 52 weeks ended December 31, 2017 , and $1,804,110 for the 52 weeks ended January 1, 2017 . Included in property, plant, and equipment are assets located in Mexico with a carrying amount of $3,209,973 and $2,659,920 at December 30, 2018 and December 31, 2017 , respectively, and assets located in Canada with a carrying amount of $656,183 and $684,431 at December 30, 2018 and December 31, 2017 , respectively.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Intangible assets of the Company consist of the following at December 30, 2018 : Gross Carrying Amount Accumulated Amortization Weighted Average Life – Years Customer contracts $ 26,523,065 $ 14,936,128 8.16 Trade names 4,673,044 1,452,276 16.43 Non-compete agreements 1,161,790 1,117,626 2.53 Unpatented technology 1,534,787 818,273 5.00 Total $ 33,892,686 $ 18,324,303 Intangible assets of the Company consist of the following at December 31, 2017 : Gross Carrying Accumulated Weighted Average Customer contracts $ 26,523,065 $ 11,588,946 8.16 Trade names 4,673,044 1,160,569 16.43 Non-compete agreements 1,161,790 995,233 2.53 Unpatented technology 1,534,787 512,156 5.00 Total $ 33,892,686 $ 14,256,904 The weighted average amortization period for all intangible assets is 8.96 years . Amortization expense for intangible assets totaled $4,067,399 for the 52 weeks ended December 30, 2018 , $4,122,560 for the 52 weeks ended December 31, 2017 , and $3,697,564 for the 52 weeks ended January 1, 2017 . Estimated amortization expense is as follows: 2019 $ 3,945,264 2020 3,913,627 2021 2,455,712 2022 1,305,314 2023 978,787 Thereafter 2,969,679 Total $ 15,568,383

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 30, 2018
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt Credit Agreement On April 29, 2016, Unique Fabricating NA, Inc. (the “US Borrower”) and Unique-Intasco Canada, Inc. (the “CA Borrower”) and Citizens Bank, National Association (“Citizens”), acting as syndication agent, and other lenders, entered into a credit agreement (the “Credit Agreement”) providing for borrowings of up to the aggregate principal amount of $62.0 million . The Credit Agreement was a senior secured credit facility and consisted of a revolving line of credit of up to $30.0 million (the “Revolver”) to the US Borrower, a $17.0 million principal amount term loan (the “US Term Loan”) to the US Borrower, and a $15.0 million principal amount term loan (the “CA Term Loan”) to the CA Borrower. At Closing, the US Term Loan and the CA Term Loan were fully funded and the US Borrower borrowed approximately $22.9 million under the Revolver. On August 18, 2017, the US Borrower and the CA Borrower entered into the Second Amendment (the “Amendment”) to the Credit Agreement, with Citizens acting as syndication agent, and other lenders. The amendment converted $4.0 million of outstanding borrowings under the Revolver into an additional $4.0 million term loan to the US borrower (the “US Term Loan II”). The conversion of a portion of the outstanding borrowings under the Revolver did not reduce the aggregate amount available to be borrowed under it. On August 8, 2018 the US Borrower and the CA Borrower entered into the Fourth Amendment (the “Fourth Amendment”) to the Credit Agreement, with Citizens acting as Administrative Agent, and the other lenders. The Fourth Amendment required the Company to use the net proceeds from the sale of the Ft. Smith, Arkansas building to reduce the outstanding borrowings under the Revolver. The application of the net proceeds did not permanently reduce the amounts that could be borrowed under the Revolver. The Fourth Amendment also made less restrictive for the fiscal quarter ended September 30, 2018, the financial covenant ratio which determined the Company's ability to pay dividends. On September 20, 2018, the US Borrower and the CA Borrower entered into the Fifth Amendment (the “Fifth Amendment”) to the Credit Agreement, with Citizens acting as Administrative Agent, and the other lenders. The Fifth Amendment temporarily increased the maximum amount that could be borrowed under the Revolver to $32.5 million from its then current maximum of $30.0 million . This increase implemented by the Fifth Amendment was effective until October 31, 2018, at which point the maximum amount that may be borrowed under the Revolver reverted back to $30.0 million and was replaced by the Amended and Restated Credit Agreement outlined below. Amended and Restated Credit Agreement On November 8, 2018, the US Borrower and the CA Borrower, entered into an Amended and Restated Credit Agreement (the “Amended and Restated Credit Agreement”), which amended and restated the existing Credit Agreement. The Amended and Restated Credit Agreement is a five year agreement, which, among other things increases the principal amount of US Term Loan borrowings to $26.0 million , creates a two year line of credit to fund capital expenditures and extends the maturity dates of all borrowings from April 28, 2021 to November 7, 2023. The Amended and Restated Credit Agreement provides for borrowings of up to $30.0 million under the Revolver, subject to availability, and left the outstanding principal balance on the CA Term Loan, approximately $12.0 million , the same as it was on the previous Credit Agreement. The Amended and Restated Credit Agreement combined the previous US Term Loan and US Term Loan II (the “New US Term Loan”), and increases the aggregate principal amount to $26.0 million dollars from $15.9 million , in total, for the previous US Term Loan and Term Loan II. The increase in the principal amount effected by the New U.S. Term Loan replaced and termed-out outstanding borrowings under the Revolver. The Amended and Restated Credit Agreement changes the quarterly principal payments of the New US Term Loan to $337,500 through September 30, 2020, $575,000 thereafter through September 30, 2021, and $812,500 thereafter though maturity. The Amended and Restated Credit Agreement also adds a two year $5.0 million dollar line of credit dedicated to Capital Expenditures. Finally, the agreement made certain changes to the Company's covenants and financial covenant ratios. The Revolver, New US Term Loan, and CA Term Loan all mature on November 7, 2023 and bear interest at the Company's election of either (i) the greater of the Prime Rate or the Federal Funds Effective Rate (the “Base Rate”) or ii) the LIBOR rate, plus an applicable margin ranging from 1.75 percent to 2.75 percent per annum in the case of the Base Rate and 2.75 percent to 3.75 percent per annum in the case of the LIBOR rate, in each case, based on a senior leverage ratio threshold, measured quarterly. In addition, the Amended and Restated Credit Agreement allows for increases in the principal amount of the Revolver and the New US and CA Term Loans not to exceed a $10.0 million principal amount, in the aggregate, provided that before and after giving effect to the proposed increase (and any transactions to be consummated using proceeds of the increase), the total leverage and debt service coverage ratios do not exceed specified amounts. The Amended and Restated Credit Agreement also provides for the issuance of letters of credit with a face amount of up to a $2.0 million , in the aggregate, provided that any letter of credit that is issued will reduce availability under the Revolver. As of December 30, 2018 , $18,286,662 was outstanding under the New Revolver. This amount is gross of debt issuance costs which are further described in Note 1. The New Revolver had an effective interest rate of 6.2699 percent per annum at December 30, 2018 , and is secured by substantially all of the Company’s assets. At December 30, 2018 , the maximum additional available borrowings under the New Revolver were $11,613,338 , which includes a reduction for a $100,000 letter of credit issued for the benefit of the landlord of one of the Company’s leased facilities. The maximum amount available was further subject to borrowing base restrictions. Long term debt consists of the following: December 30, December 31, New US Term Loan, payable to lenders in quarterly installments of $337,500 through September 30, 2020, $575,000 through September 30, 2021, and $812,500 through November 7, 2023, with a lump sum due at maturity. The effective interest rate was 6.2699% per annum at December 30, 2018. At December 30, 2018 the balance of the New US Term Loan is presented net of a debt discount of $335,418 from costs paid to or on behalf of the lenders. $ 25,664,582 $ — US Term Loan, payable to lenders in quarterly installments of $318,750 through March 31, 2018, $425,000 through March 31, 2019, and $531,250 through March 31, 2021, with a lump sum due at maturity. The effective interest rate was 0% per annum at December 30, 2018. At December 30, 2018 the balance of the US Term Loan is presented net of a debt discount of $0 from costs paid to or on behalf of the lenders. — 14,060,065 US Term Loan II, payable to lenders in quarterly installments of $200,000 through March 31, 2021, with a lump sum due at maturity. The effective interest rate was 0% per annum at December 30, 2018. At December 30, 2018, the balance of the US Term Loan II is presented net of a debt discount of $0 from costs paid to or on behalf of the lenders. — 3,566,398 CA Term Loan, payable to lenders in quarterly installments of $375,000 through November 7, 2023, with a lump sum due at maturity. The effective interest rate was 6.2699% per annum at December 30, 2018. At December 30, 2018 the balance of the CA Term Loan is presented net of a debt discount of $146,814 from costs paid to or on behalf of the lenders. 11,853,186 12,962,381 Note payable to the seller of former owner of business Unique acquired in 2014 which is unsecured and subordinated to the New Credit Agreement. Interest accrues monthly at an annual rate of 6.00%. The note payable is due in full on February 6, 2019. 500,000 500,000 Other debt — — Total debt excluding revolver 38,017,768 31,088,844 Less current maturities 3,350,000 3,799,998 Long-term debt – Less current maturities $ 34,667,768 $ 27,288,846 The senior credit facility contains customary negative covenants and requires that the Company comply with various financial covenants including a total leverage ratio and a debt service coverage ratio, as defined in the Amended and Restated Credit Agreement. As of December 30, 2018 and December 31, 2017 , the Company was in compliance with these covenants. Additionally, the New US Term Loan and CA Term Loan contains a clause, effective December 30, 2018, that requires an excess cash flow payment to be made to the lenders to reduce the New US Term Loan or the CA Term Loan if the Company’s cash flow exceeds certain thresholds as defined by the Amended and Restated Credit Agreement. Maturities on the Company’s Revolver and other long term debt obligations for the remainder of the current fiscal year and future fiscal years: 2019 $ 3,350,000 2020 3,087,500 2021 4,037,500 2022 4,750,000 2023 41,561,662 Thereafter — Total 56,786,662 Discounts (482,232 ) Debt issuance costs (381,793 ) Total debt – Net $ 55,922,637

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Interest Rate Swap The Company holds derivative financial instruments, in the form of interest rate swaps, as required by its Credit Agreement and Amended and Restated Credit Agreement, for the purpose of hedging certain identifiable transactions in order to mitigate risks relating to the variability of future earnings and cash flows caused by interest rate fluctuations. The Company has elected not to apply hedge accounting for financial reporting purposes. The interest rate swaps are recognized in the accompanying consolidated balance sheets at their fair value. Monthly settlement payments due on the interest rate swaps and changes in their fair value are recognized currently in net income as interest expense in the consolidated statements of operations. Effective June 30, 2016, as required under the Credit Agreement entered into during April 2016, the Company entered into a new interest rate swap which requires the Company to pay a fixed rate of 1.055 per annum while receiving a variable rate per annum based on the one month LIBOR for a net monthly settlement based on the notional amount. The notional amount at the effective date was $16,681,250 which decreased by $318,750 each quarter until June 30, 2017, decreased by $425,000 each quarter until June 29, 2018, when it began decreasing by $531,250 per quarter until it expires on June 28, 2019. Effective October 2, 2017, as required under the Second Amendment to the Credit Agreement, the Company entered into another interest rate swap that requires the Company to pay a fixed rate of 1.093 per annum while receiving a variable interest rate per annum based on the one month LIBOR for a net monthly settlement based on the notional amount in effect. The notional amount at the effective date was $1,900,000 which decreases by $100,000 each quarter until it expires on September 30, 2020. Effective November 30, 2018, as required under the Amended and Restated Credit Agreement, the Company entered into another interest rate swap the requires the Company to pay a fixed rate of 3.075 per annum while receiving a variable interest rate per annum based on the one month LIBOR for a net monthly settlement based on the notional amount in effect. The notional amount at the effective date was $5,037,500 which increases by $378,125 each quarter until June 28, 2019 when the notional amount increases to $17,540,625 due to the interest rate swap from 2016 above expiring. The notional amount then decreases each quarter by $153,125 until September 30, 2020 when the notional amount increases to $17,475,000 due to the interest rate swap from 2017 above expiring. The notional amount then decreases each quarter by $431,250 until December 31, 2021, then decreases each subsequent quarter by $609,375 until it expires on November 8, 2023. At December 30, 2018 , the fair value of all of the swaps was $(292,191) , of which $102,963 is included in current assets in the consolidated balance sheet and $(395,154) is included in other long term liabilities in the consolidated balance sheet. The Company received $(113,025) in the aggregate, in net monthly settlements with respect to the interest rate swaps for the 52 weeks ended December 30, 2018 . At December 31, 2017 , the fair value of both swaps, then in effect was $159,320 , and was included in other long-term assets in the consolidated balance sheet. The Company paid $1,159 , in the aggregate, in net monthly settlements with respect to the interest rate swaps for the 52 weeks ended December 31, 2017 . Foreign Currency Forward Contract Effective June 29, 2016, the Company entered into a foreign currency forward contract to hedge the Mexican Peso. The forward contract has an equivalent USD notional amount of $3,300,000 and expired on June 30, 2017. The Company is exposed to market risk, including fluctuations in foreign currency exchange rates which may result in cash flow risks, and as a result from time to time will enter into forward contracts to mitigate risks relating to the variability of future earnings and cash flows caused by foreign currency rate fluctuations. The Company elected not to apply hedge accounting for financial reporting purposes. The foreign currency forward contract was recognized in the accompanying consolidated balance sheet at its fair value and changes in its fair value were recognized currently in net income as gain/losses on foreign currency exchange (which is part of other income (expense), net) in the consolidated statement of operations. At December 30, 2018 and December 31, 2017 , the fair value of this foreign currency forward contract was $0 .

Restructuring

Restructuring	12 Months Ended
	Dec. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring Unique's restructuring activities are undertaken as necessary to implement management's strategy, streamline operations, take advantage of available capacity and resources, and achieve net cost reductions. The restructuring activities generally relate to realignment of existing manufacturing capacity and closure of facilities and other exit or disposal activities, either in the normal course of business or pursuant to specific restructuring programs. Fort Smith Restructuring On February 13, 2018, the Company made the decision to close its manufacturing facility in Fort Smith, Arkansas. The Company ceased operations at the Fort Smith facility in July of 2018, and approximately 20 positions were eliminated as a result of the closure. The Company's decision resulted from its desire to streamline operations and to utilize some of the available excess capacity in other of our facilities. The Company moved existing Fort Smith production to its manufacturing facilities in Evansville, Indiana and Monterrey, Mexico. The Company provided the affected employees severance pay, health benefits continuation and job search assistance. The Company evaluated whether or not this closing met the criteria for discontinued operations and concluded that the closing did not meet the definition as it did not represent a strategic shift in the Company's operations and the Company will have continuing cash flows from the production being moved to other facilities within the Company. The Company incurred one-time severance costs as a result of this plant closure of $233,782 in the 52 weeks ended December 30, 2018 . The amount of other costs incurred associated with this plant closure, which primarily consisted of preparing and moving existing production equipment and inventory at Fort Smith to other facilities was $559,461 in the 52 weeks ended December 30, 2018 . All of these costs were recorded to the restructuring expense line in continuing operations in the Company's consolidated statement of operations. On October 18, 2018, the Company sold the building it owned in Fort Smith, which had a net book value of $733,059 for cash proceeds of $876,032 resulting in a gain on the sale of $142,973 . Through the date of the sale the building qualified as being held for sale, and therefore was presented as such in the consolidated balance sheet. Port Huron Restructuring On February 1, 2018, the Company made the decision to close its manufacturing facility in Port Huron, Michigan. The Company ceased operations at the Port Huron facility in June of 2018 and 7 positions were eliminated as a result of the closure. The Company's decision resulted from its desire to streamline operations and to utilize some of the available excess capacity in other of its facilities. As such, the Company moved existing Port Huron production to our manufacturing facilities in London, Ontario, Auburn Hills, Michigan, and Louisville, Kentucky. The Company provided the affected employees severance pay, health benefits continuation and job search assistance. The Company evaluated whether or not this closing met the criteria for discontinued operations and concluded that the closing did not meet the definition as it did not represent a strategic shift in the Company's operations and the Company will have continuing cash flows from the production being moved to other facilities within the Company. The Company incurred one-time severance costs as a result of this plant closure of $64,768 in the 52 weeks ended December 30, 2018 . The amount of other costs incurred associated with this plant closure, which primarily consisted of preparing and moving existing production equipment and inventory at Port Huron to other facilities was $297,899 in the 52 weeks ended December 30, 2018 . All of these costs were recorded to the restructuring expense line in continuing operations in the Company's consolidated statement of operations. The tables below summarize the activity in the restructuring liability for the 52 weeks ended December 30, 2018 . Employee Termination Benefits Liability Other Exit Costs Liability Total Accrual balance at January 1, 2018 $ — $ — $ — Provision for estimated expenses incurred during the year 298,551 857,359 1,155,910 Payments made during the year (298,551 ) (857,359 ) (1,155,910 ) Accrual balance at December 30, 2018 — — — There are no future costs expected with the Ft. Smith and Port Huron closures above as the closures were completed in 2018. Murfreesboro Restructuring On October 27, 2015, the Company announced the planned closure of its manufacturing facility located in Murfreesboro, Tennessee that resulted in a workforce reduction of approximately 30 employees. The planned closure of the Murfreesboro facility was effective in the fourth quarter of 2015 and completed in January 2016. The action was necessary due to the tight labor market in Murfreesboro and the struggle to staff production levels to meet the ongoing growth strategy for Murfreesboro's respective products manufactured at the plant. In order to ensure the Company's ability to service its customers at the increasing volumes projected for the future, the Company decided to move existing Murfreesboro production including equipment to the Company's other manufacturing facilities in Evansville, Indiana and LaFayette, Georgia. The Company evaluated whether or not this closing met the criteria for discontinued operations and concluded that the closing did not meet the definition as the closing did not represent a strategic shift in the Company's operations and the Company had continuing cash flows from the production being moved to other facilities within the Company. There were no costs incurred with respect to the Murfreesboro restructuring in 2017 as the restructuring and costs associated with the closure were all completed in 2016 as noted below. The Company reversed severance related costs which had been previously been recorded as a result of this plant closure in the amount of $(51,951) in the 52 weeks ended January 1, 2017. The amount of other costs incurred associated with this plant closure, which primarily consisted of moving existing production equipment at Murfreesboro to other facilities was $87,005 in the 52 weeks ended January 1, 2017. The expenses were recorded to the restructuring expense line in continuing operations in the Company's consolidated statements of operations. The Company sold the building it owned in Murfreesboro, which had a net book value of $2,033,327 on October 31, 2016, for cash proceeds of $2,175,185 resulting in a gain on the sale of $147,413 . Through the date of the sale the building qualified as being held for sale, and therefore was presented as such in the consolidated balance sheet. The tables below summarize the activity in the restructuring liability for the 52 weeks ended January 1, 2017. Employee Termination Benefits Liability Other Exit Costs Liability Total Accrual balance at January 3, 2016 $ 190,864 $ 63,327 $ 254,191 Provision for estimated expenses incurred during the year (51,951 ) 87,005 35,054 Payments made during the year (138,913 ) (150,332 ) (289,245 ) Accrual balance at January 1, 2017 $ — $ — $ — Subsequent to our 52 weeks ended December 30, 2018 , the Company announced that in order to reduce fixed costs it would be eliminating an immaterial amount of salaried positions throughout the Company. Any severance amount paid will be immaterial.

Stock Incentive Plans

Stock Incentive Plans	12 Months Ended
	Dec. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Incentive Plans	Stock Incentive Plans 2013 Stock Incentive Plan The Company’s board of directors approved a stock incentive plan (the “Plan”) in 2013. The Plan permits the Company to grant 495,000 non statutory or incentive stock options to the employees, directors and consultants of the Company. 495,000 shares of unissued common stock are reserved for the Plan. The board of directors has the authority to determine the participants to whom stock options shall be awarded as well as any restrictions to be placed upon the awards. The exercise price cannot be less than the fair value of the underlying shares at the time the stock options are issued and the maximum length of an award is ten years . On July 17, 2013 and January 1, 2014, the board of directors approved the issuance of 375,000 and 120,000 non statutory stock option awards, respectively, to employees of the Company with an exercise price of $3.33 per share with a weighted average grant date fair value of $0.23 and $0.35 per share, respectively. On April 29, 2016, the Company issued 7,200 non statutory stock option awards to employees of the Company with an exercise price of $12.58 and with a weighted average grant date fair value of $2.80 per share. On September 15, 2017, the Company issued 5,000 non statutory stock option awards to employees of the Company with an exercise price of $7.65 per share and with a weighted average grant date fair value of $1.41 per share. All 4 grants of the awards vest 20 percent on the grant date and an additional 20 percent on each of the first, second, third and fourth anniversaries thereafter. Vested awards can only be exercised while the participants are employed by the Company. The fair value of each option award is estimated on the grant date using a Black Scholes option pricing model that uses the weighted average assumptions noted in the following table. The expected volatility is based on the historical volatility of the stock of comparable companies. The expected term of the awards was estimated based on findings from academic studies investigating the average holding period for options adjusted for the Company’s size and risk factors. The risk free rate for periods within the contractual life of the option is based on the United States Treasury yield curve in effect at the time of grant. September 15, 2017 April 29, 2016 January 1, 2014 July 17, 2013 Expected volatility 40.00 % 40.00 % 34.00 % 34.00 % Dividend yield 7.00 % 5.00 % — % — % Expected term (in years) 5 5 4 4 Risk-free rate 1.81 % 1.28 % 1.27 % 0.96 % 2014 Omnibus Performance Award Plan In 2014 the board of directors and stockholders adopted the Unique Fabricating, Inc. 2014 Omnibus Performance Award Plan, or the 2014 Plan. The 2014 Plan provides for the grant of cash awards, stock options, stock appreciation rights, or SARs, shares of restricted stock and restricted stock units, or RSUs, performance shares and performance units. The 2014 Plan originally authorized the grant of awards relating to 250,000 shares of our common stock. In the event of any transaction that causes a change in capitalization, the Compensation Committee, such other committee administering the 2014 Plan or the board of directors will make such adjustments to the number of shares of common stock delivered, and the number and/or price of shares of common stock subject to outstanding awards granted under the 2014 Plan, as it deems appropriate and equitable to prevent dilution or enlargement of participants’ rights. An amendment approved in March of 2016 by our board of directors which was approved by our stockholders at our annual meeting of stockholders in June 2016, increased the number of shares authorized for grant of awards under the 2014 plan to a total of 450,000 shares of our common stock. On August 17, 2015, the board of directors approved the issuance stock option awards for 230,000 shares of which 45,000 shares subject to non statutory options were granted to the board of directors, and 185,000 incentive stock options were granted to employees of the Company. All of the awards had an exercise price of $12.50 per share with a weighted average grant date fair value of $2.72 per share. These awards vest 20 percent on the grant date and an additional 20 percent on each of the first, second, third and fourth anniversaries of the grant date thereafter. Vested awards can only be exercised while the participants are employed by the Company. On November 20, 2015, the board of directors approved the issuance of stock option awards for 15,000 shares to employees of the Company. All of the awards had an exercise price of $11.50 per share with a weighted average grant date fair value of $2.23 per share. The vesting schedule, vesting percentage, and ability of the employees to exercise these options are the same as these for the August 17, 2015 grants described above. On April 29, 2016, the board of directors approved the issuance of stock option awards for 5,000 shares to employees of the Company. All of the awards had an exercise price of $12.58 per share with a weighted average grant date fair value of $2.80 per share. The vesting schedule, vesting percentage, and ability of the employees to exercise these options are the same as these for the November 20 and August 17, 2015 grants described above. On September 15, 2017, the board of directors approved the issuance of stock option awards for 15,000 shares to employees of the Company. All of the awards had an exercise price of $7.65 per share with a weighted average grant date fair value of $1.41 per share. The vesting schedule, vesting percentage, and ability of the employees to exercise these options are the same as these for the November 20, August 17, 2015, and April 29, 2016 grants described above. The fair value of each option award is estimated on the grant date using a Black Scholes option pricing model that uses the weighted average assumptions noted in the following table. The expected volatility is based on the historical volatility of the stock of comparable companies. The expected term of the awards was estimated based on findings from academic studies investigating the average holding period for options adjusted for the Company’s size and risk factors. The risk free rate for periods within the contractual life of the option is based on the United States Treasury yield curve in effect at the time of grant. September 15, 2017 April 29, 2016 November 20, 2015 August 17, 2015 Expected volatility 40.00 % 40.00 % 35.00 % 38.00 % Dividend yield 7.00 % 5.00 % 5.00 % 4.80 % Expected term (in years) 5 5 5 5 Risk-free rate 1.81 % 1.28 % 1.7 % 1.58 % A summary of option activity under both plans is presented below: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (1) Outstanding at December 31, 2017 602,480 $ 7.06 6.58 Granted — $ — 0.00 Exercised 33,800 $ 3.33 0 Forfeited or expired 5,000 $ 11.50 0 Outstanding at December 30, 2018 563,680 $ 7.25 5.61 $ — Vested and exercisable at December 30, 2018 502,800 $ 6.83 5.45 $ — (1) The aggregate intrinsic value above is obtained by subtracting the weighted average exercise price from the estimated fair value of the underlying shares as of December 30, 2018 and multiplying this result by the related number of options outstanding and exercisable at December 30, 2018 . The estimated fair value of the shares is based on the closing stock price of $4.41 as of December 30, 2018 . As of December 30, 2018 there is no intrinsic value as the exercise prices is greater that the estimated fair value. The Company recorded gross compensation expense of $131,302 for the 52 weeks ended December 30, 2018 , $150,368 for the 52 weeks ended December 31, 2017 , and $166,476 for the 52 weeks ended January 1, 2017 in its consolidated statements of operations, as a component of sales, general and administrative expenses. The income tax benefit related to share based compensation expense was $24,816 for the 52 weeks ended December 30, 2018 , $22,360 for the 52 weeks ended December 31, 2017 , and $54,549 for the 52 weeks ended January 1, 2017 . As of December 30, 2018 , there was $100,320 of total unrecognized compensation cost related to nonvested stock option awards under the plans. That cost is expected to be recognized over a weighted average period of 1.18 years .

Income Taxes

Income Taxes	12 Months Ended
	Dec. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income before income taxes for U.S. and Non-U.S. operations are as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 U.S. income $ 1,017,194 $ 3,877,650 8,820,049 Non-U.S. income 3,543,376 3,741,921 1,121,690 Income before income taxes $ 4,560,570 $ 7,619,571 $ 9,941,739 The components of the income tax provision included in the consolidated statements of operations are all attributable to continuing operations and are detailed as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Current tax expense: Federal $ (27,056 ) $ 1,206,992 $ 3,340,070 State 61,081 292,702 355,748 Foreign 1,119,222 1,185,688 727,450 Total 1,153,247 2,685,382 4,423,268 Deferred tax expense: Federal (123,789 ) (1,165,546 ) (766,716 ) State (13,863 ) (235,622 ) (68,069 ) Foreign (153,626 ) (151,334 ) (330,864 ) Total (291,278 ) (1,552,502 ) (1,165,649 ) Total income tax expense $ 861,969 $ 1,132,880 $ 3,257,619 Deferred income tax assets and liabilities at December 30, 2018 and December 31, 2017 reflect the effect of temporary differences between amounts of assets, liabilities and equity for financial reporting purposes and the bases of such assets, liabilities and equity as measured based on tax laws, as well as tax loss and tax credit carryforwards. The following table summarizes the components of temporary differences and carryforwards that give rise to deferred tax assets and liabilities: December 30, December 31, Deferred tax assets (liabilities): Allowance for doubtful accounts $ 174,442 $ 194,684 Inventories 140,034 118,813 Accrued payroll and benefits 533,294 491,214 Excess interest expense 279,017 — Foreign tax credit 620,923 — Other 156,471 44,820 Deferred tax asset before valuation allowance 1,904,181 849,531 Valuation allowance (620,923 ) — Deferred tax asset 1,283,258 849,531 Property, plant, and equipment (3,082,182 ) (2,534,440 ) Goodwill and intangible assets — (405,293 ) Deferred tax liability (3,082,182 ) $ (2,939,733 ) Total deferred tax liability $ (1,798,924 ) $ (2,090,202 ) Management evaluates all positive and negative evidence and uses judgment regarding past and future events, including operating results, to help determine when it is more likely than not that all or some portion of the deferred tax assets may not be realized. When appropriate, a valuation allowance is recorded against deferred tax assets to reserve for future tax benefits that may not be realized. For the year ended December 30, 2018, the Company has established a valuation allowance of $620,923 related to foreign tax credits (generated by the deemed repatriation under U.S. tax reform) expiring in 2028 as the Company has concluded that it is not more likely than not that the credits will be used prior to their expiration. The transition tax provision of the Tax Act eliminated the basis difference that existed previously for purposes of ASC Topic 740. However, there are limited other taxes that could continue to apply such as foreign withholding and certain state taxes. U.S. income taxes have not been recognized for such taxes as the Company continues to remain indefinitely reinvested with respect to its foreign earnings. A reconciliation of taxes on income from continuing operations based on the statutory federal income tax rate to the provision for income taxes is as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Income tax expense, computed at 21% of pretax income for 2018 and 34% pretax income for 2017 and 2016 $ 957,720 $ 2,590,654 $ 3,380,191 State income taxes, net of federal benefit 22,683 66,607 193,070 Foreign tax rate differential 252,025 (206,432 ) (51,388 ) U.S. Tax on non-U.S. income 320,000 — — Impact of U.S. tax refor (80,453 ) (559,286 ) — Research and Development credits (503,785 ) (681,957 ) — Other (106,221 ) (76,706 ) (264,254 ) Total provision for income taxes $ 861,969 $ 1,132,880 $ 3,257,619 On December 22, 2017 the Tax Cuts and JOBS Act (the “Act”) was signed into law. The Act changed many aspects of U.S. corporate income taxation and including the reduction of the corporate income tax rate from 35% to 21%, implementation of a territorial system and imposition of a one-time tax on deemed repatriated earnings of foreign subsidiaries, introduction of tax on U.S. shareholders of certain foreign subsidiaries earnings, Global Intangible Low-Taxed Income (“GILTI”), and limitations on deductibility of interest expense. The impact in 2017 primarily consists of a $(1,357,472) benefit related to the impact on the U.S. deferred tax liability due to the lowering of the corporate tax rate described above and $798,186 of expense for the estimate for the impact of one-time transition tax on deemed repatriated earnings of foreign subsidiaries.We completed our accounting for the income tax effects of the Act in 2018 and recorded a benefit of $(80,453) as an adjustment to the provisional estimate of the one-time transition tax expense. The Company also recorded $320,000 expense related to GILTI in 2018 and recorded a deferred tax asset of $279,017 for interest expense in excess of limitation on deductibility. The Company recognizes the benefit of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement with the relevant tax authority. The Company assesses all tax positions for which the statute of limitations remain open. The Company had no unrecognized tax benefits as of December 30, 2018 and December 31, 2017 . The Company recognizes any penalties and interest when necessary as income tax expense. There were no penalties or interest recorded during the 52 weeks ended December 30, 2018, December 31, 2017, and January 1, 2017, respectively. The Company files income tax returns in the United States, Mexico, and Canada as well as in various state and local jurisdictions. With few exceptions, the Company is no longer subject to income tax examinations by tax authorities for years before 2015 in the United States, before 2013 in Mexico, and before 2016 in Canada.

Operating Leases

Operating Leases	12 Months Ended
	Dec. 30, 2018
Leases, Operating [Abstract]
Operating Leases	Operating Leases The Company leases office space, production facilities and equipment under operating leases with various expiration dates through the year 2023. The leases for office space and production facilities require the Company to pay taxes, insurance, utilities and maintenance costs. Five of the leases provide for escalating rents over the life of the lease and rent expense is therefore recognized over the term of the lease on a straight line basis, with the difference between lease payments and rent expense recorded as deferred rent in accrued expenses in the consolidated balance sheets. Total rent expense charged to operations was approximately $2,346,259 for the 52 weeks ended December 30, 2018 , $2,198,051 for the 52 weeks ended December 31, 2017 , and $2,019,073 for the 52 weeks ended January 1, 2017 . Future minimum lease payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year are as follows at December 30, 2018 : 2019 $ 1,957,954 2020 1,404,215 2021 560,374 2022 429,475 2023 35,446 Thereafter — Total $ 4,387,464

Retirement Plans

Retirement Plans	12 Months Ended
	Dec. 30, 2018
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans The Company maintains a defined contribution plan covering certain full time salaried employees. Employees can make elective contributions to the plan. The Company contributes 100 percent of an employee’s contribution up to the first 3 percent of each employee’s total compensation and 50 percent for the next 2 percent of each employee’s total compensation. In addition, the Company, at the discretion of the board of directors, may make additional contributions to the plan on behalf of the plan participants. The Company contributed $488,335 for the 52 weeks ended December 30, 2018 , $451,572 for the 52 weeks ended December 31, 2017 , and $409,247 for the 52 weeks ended January 1, 2017 The Intasco operations acquired in April 2016 have separate retirement plans. The United States facility sponsors a SIMPLE IRA account for qualifying employees. The plan makes a contribution equal to 3 percent of a participant's gross wages to the participating employees' SIMPLE IRA accounts. Contributions by Intasco in the United States totaled $3,392 for the 52 weeks ended December 30, 2018 , $3,247 for the 52 weeks ended December 31, 2017 , and $3,010 for the 52 weeks ended January 1, 2017 . The Canadian facility sponsors a retirement plan whereby Intasco makes a matching contribution of participant contributions up to a maximum amount based on the participants' number of years of service. Contributions by Intasco in Canada totaled $44,332 for the 52 weeks ended December 30, 2018 , $40,643 for the 52 weeks ended December 31, 2017 , and $28,195 for the 52 weeks ended January 1, 2017 .

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Effective March 18, 2013, the Company is under a management agreement with a firm related to several stockholders. The agreement initially provided for annual management fees of $300,000 and additional fees for assistance provided with acquisitions. Effective upon completion of the Company's initial public offering, the agreement was amended to reduce the annual management fee by an amount equal to the amount, if any, of annual cash retainers and equity awards received as compensation for service on the board of directors by any person who is a related person of Taglich Private Equity, LLC or Taglich Brothers, Inc. The Company incurred management fees of $225,000 for the 52 weeks ended December 30, 2018 , $225,000 for the 52 weeks ended December 31, 2017 , and $225,000 for the 52 weeks ended January 1, 2017 . During the 52 weeks ended January 1, 2017, the Company incurred additional management fees related to the acquisition of Intasco on April 29, 2016 of $259,000 . The Company allocates these fees to the services provided based on their relative fair values. The fees paid were all allocated to and expensed as transaction costs. The management agreement had an initial term of five years, expiring on March 18, 2018, and renews automatically annually for additional one year terms. The current term expires on March 18, 2019. The agreement also will terminate on the date that the Taglich Founding Investors or Taglich Equity Investors, each as defined, no longer also collectively own 50% of the equity securities owned by either of them on March 18, 2013.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Financial instruments consist of cash equivalents, accounts receivable, accounts payable and debt. The carrying amount of all significant financial instruments approximates fair value due to either the short maturity or the existence of variable interest rates that approximate prevailing market rates. Accounting standards require certain other items be reported at fair value in the financial statements and provides a framework for establishing that fair value. The framework for determining fair value is based on a hierarchy that prioritizes the valuation techniques and inputs used to measure fair value. Fair values determined by Level 1 inputs use quoted prices in active markets for identical assets or liabilities that the Company has the ability to access. Fair values determined by Level 2 inputs use other inputs that are observable, either directly or indirectly. Level 2 inputs may include quoted prices for similar items in active markets, and other inputs such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs, including inputs that are available in situations where there is little, if any, market activity for the related item. Level 3 fair value measurements are based primarily on management’s own estimates using inputs such as pricing models, discounted cash flow methodologies or similar techniques taking into account the characteristics of the item. In instances whereby inputs used to measure fair value fall into different levels of the fair value hierarchy, fair value measurements in their entirety are categorized based on the lowest level input that is significant to the valuation. The Company’s assessment of the significance of particular inputs to these fair value measurements requires judgment and considers factors specific to each item. The Company measures its interest rate swap at fair value on a recurring basis based primarily on Level 2 inputs using an income model based on disparity between variance and fixed interest rates, the scheduled balance of principal outstanding, yield curves and other information readily available in the market. The Company measures its foreign currency forward contract on a recurring basis based primarily on Level 2 inputs using the present value of future cash flows to be incurred on the contracts. In accordance with market standards and conventions for valuing such contracts, the transactions reflect the current direction and amounts expected in each currency, spot exchange rates at period-end, discount factors and forward interest rate curves for each relevant currency pair and future maturity date. This forward contract expired in fiscal year 2017.

Contingencies

Contingencies	12 Months Ended
	Dec. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies The Company is engaged from time to time in legal matters and proceedings arising out of its normal course of business. The Company establishes a liability related to its legal proceedings and claims when it has determined that it is probable that the Company has incurred a liability and the related amount can be reasonably estimated. If the Company determines that an obligation is reasonably possible, the Company will, if material, disclose the nature of the loss contingency and the estimated range of possible loss, or include a statement that no estimate of loss can be made. While uncertainties are inherent in the final outcome of such matters, the Company believes that there are no pending proceedings in which the Company is currently involved that will have a material effect on its financial position, results of operations or cash flow.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing the net income by the weighted-average number of shares outstanding during the period. Diluted earnings per share is computed giving effect to all potentially weighted average dilutive shares including stock options and warrants. The dilutive effect of outstanding awards, if any, is reflected in diluted earnings per share by application of the treasury stock method. The following table sets forth the computation of basic and diluted earnings per share. Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Basic earnings per share calculation: Net income $ 3,698,601 $ 6,486,691 $ 6,684,120 Net income attributable to common stockholders $ 3,698,601 $ 6,486,691 $ 6,684,120 Weighted average shares outstanding 9,770,011 9,750,948 9,678,316 Net income per share-basic $ 0.38 $ 0.67 $ 0.69 Diluted earnings per share calculation: Net income $ 3,698,601 $ 6,486,691 $ 6,684,120 Weighted average shares outstanding 9,770,011 9,750,948 9,678,316 Effect of dilutive securities: Stock options (1)(2)(3) 138,017 147,316 204,948 Warrants (1)(2)(3) 670 1,154 13,019 Diluted weighted average shares outstanding 9,908,698 9,899,418 9,896,283 Net income per share-diluted $ 0.37 $ 0.66 $ 0.68 (1) Options to purchase 311,480 shares of common stock remaining to be exercised under the 2013 plan and warrants to purchase 1,185 shares of common stock remaining to be exercised, were considered in the computation of diluted earnings per share using the treasury stock method in the 2018 calculation. Options to purchase 220,000 shares of common stock that were granted in August 2015 and November 2015 remaining to be exercised, as discussed in Note 9, under the 2014 plan, options to purchase 7,200 shares of common stock and 5,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in April 2016, options to purchase 5,000 and 15,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in September 2017, and warrants to purchase 141,000 shares of common stock issued to the underwriters of the Company's IPO in July 2015, were not included in the computation of diluted earnings per share in the 2018 period because the effect would have been anti-dilutive. (2) Options to purchase 345,280 shares of common stock remaining to be exercised under the 2013 plan, and warrants to purchase 1,185 shares of common stock remaining to be exercised, were considered in the computation of diluted earnings per share using the treasury stock method in the 2017 calculation. Options to purchase 225,000 shares of common stock that were granted in August 2015 and November 2015 remaining to be exercised, as discussed in Note 9, under the 2014 plan, options to purchase 7,200 shares of common stock and 5,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in April 2016, 5,000 and 15,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in September 2017, and warrants to purchase 141,000 shares of common stock issued to the underwriters of the Company's IPO in July 2015, were not included in the computation of diluted earnings per share in the 2017 period because the effect would have been anti-dilutive. (3) Options to purchase 392,680 shares of common stock remaining to be exercised under the 2013 plan, warrants to purchase 2,286 shares of common stock remaining to be exercised, warrants to purchase 141,000 shares issued to the underwriters in July 2015 as noted in Note 1, and options to purchase 15,000 shares of common stock that were granted in August 2015, as discussed in Note 9 under the 2014 plan, were considered in the computation of diluted earnings per share using the treasury stock method in the 2016 calculation. Options to purchase 210,000 shares of common stock that were granted on January 1, 2014 remaining to be exercised under the 2013 plan and 12,200 shares of common stock that were granted under the 2013 and 2014 plan in April 2016 as noted in Note 9, were not included in the computation of diluted earnings per share in the 2016 period because the effect would have been anti-dilutive.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (unaudited)	Selected Quarterly Financial Data (unaudited) The following tables set forth a condensed summary of the Company's unaudited selected quarterly results for each of the quarters in fiscal 2018 and 2017. Thirteen Weeks Ended April 1, 2018 Thirteen Weeks Ended July 1, 2018 Thirteen Weeks Ended September 30, 2018 Thirteen Weeks Ended December 30, 2018 2018 Net sales $ 47,304,153 $ 45,742,370 $ 42,051,968 $ 39,811,250 Gross profit $ 11,080,147 $ 11,189,022 $ 8,523,511 $ 8,542,057 Operating income 2,670,898 3,272,399 1,121,781 1,332,793 Net income $ 1,511,889 $ 1,751,009 $ 626,823 $ (191,120 ) Net income per share Basic $ 0.15 $ 0.18 $ 0.06 $ (0.02 ) Diluted $ 0.15 $ 0.18 $ 0.06 $ (0.02 ) Thirteen Weeks Ended April 2, 2017 Thirteen Weeks Ended July 2, 2017 Thirteen Weeks Ended October 1, 2017 Thirteen Weeks Ended December 31, 2017 2017 Net sales $ 47,857,096 $ 44,518,039 $ 41,231,366 $ 41,681,481 Gross profit $ 11,107,161 $ 10,666,091 $ 8,974,926 $ 9,305,356 Operating income $ 3,515,457 $ 3,070,774 $ 1,706,114 $ 1,994,325 Net income $ 2,046,837 $ 1,668,410 $ 715,106 $ 2,056,338 Net income per share Basic $ 0.21 $ 0.17 $ 0.07 $ 0.21 Diluted $ 0.21 $ 0.17 $ 0.07 $ 0.21

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events Declaration of Cash Dividend On February 12, 2019, our board of directors declared a quarterly cash dividend of $0.05 per common share. The dividend will be payable on March 7, 2019 to shareholders of record at the close of business on February 28, 2019 for an amount of approximately $0.5 million.

Nature of Business and Signif_2

Nature of Business and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The accompanying consolidated financial statements have been prepared by the Company, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”).
Principles of Consolidation	The consolidated financial statements include the accounts of the Company and all subsidiaries over which the Company exercises control. All intercompany transactions and balances have been eliminated upon consolidation.
Fiscal Years	The Company’s year-end periods end on the Sunday closest to the end of the calendar year-end period. The 52-week fiscal year periods for 2018, 2017, and 2016 ended on December 30, 2018 , December 31, 2017 , and January 1, 2017 , respectively.
Cash and Cash Equivalents and Accounts Payable	Under the Company’s cash management system, checks issued but not yet presented to the Company’s bank frequently result in overdraft balances for accounting purposes and are classified as accounts payable on the consolidated balance sheets. The Company considers all highly liquid investments with an original maturity of three months or less to be cash and cash equivalents.
Accounts Receivable	Accounts receivable are stated at the invoiced amount and do not bear interest. The allowance for doubtful accounts is management’s best estimate of the amount of probable credit losses in the existing accounts receivable. Management determines the allowance based on historical write off experience and an understanding of individual customer payment history and financial condition. Management reviews the allowance for doubtful accounts at regular intervals. Account balances are charged off against the allowance when management determines it is probable the receivable will not be recovered.
Inventory	Inventory is stated at the lower of cost or market, with cost determined on the first in, first out method (FIFO). Inventory acquired as part of a business combination is recorded at its estimated fair value at the time of the business combination. The Company periodically evaluates inventory for obsolescence, excess quantities, slow moving goods and other impairments of value and establishes reserves for any identified impairments.
Valuation of Long-Lived Assets	The carrying value of long-lived assets held for use is periodically evaluated when events or circumstances warrant such a review. The carrying value of a long-lived asset held for use is considered impaired when the anticipated separately identifiable undiscounted cash flows from the asset are less than the carrying value of the asset. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of the long-lived asset.
Property, Plant, and Equipment	Property, plant, and equipment purchases are recorded at cost. Property, plant, and equipment acquired as part of a business combination are recorded at estimated fair value at the time of the business combination. Depreciation is calculated principally using the straight line method over the estimated useful life of each asset. Leasehold improvements are depreciated over the shorter of the estimated useful life of the asset or the period of the related leases. Upon retirement or disposal, the initial cost or valuation and accumulated depreciation are removed from the accounts, and any gain or loss is included in net income. Repair and maintenance costs are expensed as incurred.
Intangible Assets	The Company does not hold any intangible assets with indefinite lives. Identifiable intangible assets recognized as part of a business combination are recorded at their estimated fair value at the time of the business combination. Amortizable intangible assets are reviewed for impairment whenever events or circumstances indicate that the related carrying amount may be impaired. The remaining useful lives of intangible assets are reviewed annually to determine whether events and circumstances warrant a revision to the remaining period of amortization.
Goodwill	Goodwill represents the excess of the acquisition cost of consideration transferred over the fair value of the identifiable net assets acquired and liabilities assumed from business combinations at the date of acquisition. Goodwill is not amortized, but rather is assessed at least on an annual basis for impairment. If it is determined that it is more likely than not that the fair value is greater than the carrying value of a reporting unit then a qualitative assessment may be used for the annual impairment test. Otherwise, a one-step process is used which requires estimating the fair value of each reporting unit compared to its carrying value. If the carrying value exceeds the estimated fair value, goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.
Debt Issuance Costs	Debt issuance costs represent legal, consulting, and other financial costs associated with debt financing and are reported netted against the related debt instrument. Amounts paid to or on behalf of lenders are presented as debt discount, as a reduction of the noted debt instrument. Debt issuance costs on term debt are amortized using the straight lines basis over the term of the related debt (which is immaterially different from the required effective interest method) while those related to revolving debt are amortized using a straight line basis over the term of the related debt.
Investments	Investments in entities in which the Company has less than a 20 percent interest or is not able to exercise significant influence are carried at cost. Cost basis investments acquired are recorded at cost. Dividends received are included in income, except for those dividends received in excess of the Company’s proportionate share of accumulated earnings, which are applied as a reduction of the cost of the investment. Impairment losses due to a decline in the value of the investment that is other than temporary are recognized when incurred.
Stock Based Compensation	The Company accounts for its stock based compensation using the fair value of the award estimated at the grant date of the award. The Company estimates the fair value of awards, consisting of stock options, using the Black Scholes option pricing model. Compensation expense is recognized in earnings using the straight line method over the vesting period, which represents the requisite service period.
Revenue Recognition	Revenue is recognized by the Company upon shipment to customers when the customer takes ownership and assumes the risk of loss, collection of the relevant receivable is probable, persuasive evidence of an arrangement exists, and the sale price is fixed and determinable. Provisions for discounts and rebates to customers, estimated returns and allowances, and other adjustments are provided for in the same period the related sales are recorded.
Shipping and Handling	Shipping and handling costs are included in cost of sales as they are incurred.
Income Taxes	A current tax liability or asset is recognized for the estimated taxes payable or refundable on tax returns for the period. Deferred tax liabilities or assets are recognized for the estimated future tax effects of temporary differences between financial reporting and tax accounting measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The Company also evaluates the need for valuation allowances to reduce the deferred tax assets to realizable amounts. Management evaluates all positive and negative evidence and uses judgment regarding past and future events, including operating results, to help determine when it is more likely than not that all or some portion of the deferred tax assets may not be realized. When appropriate, a valuation allowance is recorded against deferred tax assets to reserve for future tax benefits that may not be realized. The Company recognizes the benefit of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement with the relevant tax authority. The Company assesses all tax positions for which the statute of limitations remain open.
Foreign Currency Adjustments/Foreign Currency Exchange	The expression of assets and liabilities in a currency other than the functional currency, which is the United States dollar, gives rise to exchange gains and losses when such assets and obligations are paid in another currency. Foreign currency exchange rate adjustments (i.e., differences between amounts recorded and actual amounts owed or paid) are reported in the consolidated statements of operations as the foreign currency fluctuations occur. Foreign currency exchange rate adjustments are reported in the consolidated statements of cash flows using the exchange rates in effect at the time of the cash flows. At December 30, 2018 , the Company’s exposure to assets and liabilities denominated in another currency was not significant. To the extent there is a fluctuation in the exchange rates, the amount of local currency to be paid or received to satisfy foreign currency obligations in 2019 may increase or decrease. The Company’s functional currency for all operations worldwide is the United States dollar. Nonmonetary assets and liabilities of foreign operations are remeasured at historical rates and monetary assets and liabilities are remeasured at exchange rates in effect at the end of each reporting period. Income statement accounts are remeasured at average exchange rates for the year. Gains and losses from translation of foreign currency financial statements into United States dollars are classified in other income in the consolidated statements of operations.
Derivative financial instruments	All derivative instruments are required to be reported on the consolidated balance sheets at fair value unless the transactions qualify and are designated as normal purchases or sales. Changes in fair value are reported currently through earnings unless they meet hedge accounting criteria.
Use of Estimates	The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Recently Issued Accounting Pronouncements	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . This ASU supersedes most of the existing guidance on revenue recognition in ASC Topic 605, Revenue Recognition, and establishes a broad principle that would require an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity identifies the contract with a customer, identifies the separate performance obligations in the contract, determines the transaction price, allocates the transaction price to the separate performance obligations and recognizes revenue when each separate performance obligation is satisfied. In August 2015, the FASB issued ASU 2015-14, Revenue From Contracts with Customers (Topic 606): Deferral of the Effective Date, to defer implementation of ASU 2014-09 by one year. The guidance is now currently effective for fiscal years beginning after December 15, 2018 and is to be applied retrospectively at the entity's election either to each prior reporting period presented or with the cumulative effect of application recognized at the date of initial application. The ASU allows for early adoption for fiscal years beginning after December 15, 2016, however, the Company plans to adopt the new accounting standard ASC 606, Revenue from Contracts with Customers and all the related amendments to all contracts using the modified retrospective method in its first quarter of 2019. To assess the impact of the new standard, the Company analyzed the standard's impact on customer contracts, comparing its historical accounting policies and practices to the requirements of the new standard, and identifying potential differences from application of the new standard's requirements. The Company reviewed material contracts and related agreements with customers and confirmed that the performance obligations do not change under ASC No. 606. In addition, the Company considered all relevant commercial variables to identify transaction consideration and has concluded there is not a material change in the determination of transaction pricing. Therefore, the Company has concluded that the adoption of the new revenue standards will not have a material impact on its consolidated financial statements as the method for recognizing revenue subsequent to the implementation of ASC No. 606 will not vary significantly from the revenue recognition practices under current GAAP. In January 2016, the FASB issued guidance, together with related, subsequently issued guidance, that addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Among other provisions, the guidance requires certain equity securities to be measured at fair value, with changes in fair value recognized in earnings. For equity securities without readily determinable fair values, entities may elect to measure these securities at cost minus impairment, if any, adjusted for changes in observable prices. The guidance should be applied through a cumulative-effect adjustment to the balance sheet as of the beginning of the year of adoption, except for equity securities without readily determinable fair values, to which the guidance should be applied prospectively. The Company adopted this guidance on January 1, 2018 and concluded this did not have a material effect on the consolidated financial statements. The Company does have a cost method investment in its consolidated financial statements, and there is not a readily determinable value for this investment. In February 2016, the FASB issued ASU 2016-02, Leases, which will supersede the current lease requirements in Topic 840. The ASU requires lessees to recognize a right of use asset and related lease liability for all leases, with a limited exception for short-term leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the statement of operations. Currently, leases are classified as either capital or operating, with only capital leases recognized on the balance sheet. The reporting of lease related expenses in the consolidated statements of operations and cash flows will be generally consistent with current guidance. The ASU is effective for the Company for financial statements issued for fiscal years beginning after December 15, 2019. The Company believes the impact that the adoption of this guidance will have on its consolidated financial statements will be to materially increase assets and liabilities on the consolidated balance sheet, but it is not expected to materially impact the consolidated statements of operations. In January 2017, the FASB issued ASU 2017-4, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, accounting guidance which removes Step 2 of the goodwill impairment test. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The ASU is effective for annual or interim reporting periods beginning after December 15, 2021. Early adoption is permitted. The Company adopted the provisions related to this ASU during fiscal year 2017 and the impact was not material.

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 30, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions by Acquisition	The following table summarizes the acquisition date fair values of the assets acquired and liabilities assumed. Cash $ 18,250 Accounts receivable 2,146,082 Inventory 2,485,781 Other current assets 74,194 Property, plant, and equipment 861,491 Identifiable intangible assets 7,316,694 Accounts payable and accrued liabilities (716,080 ) Deferred tax liabilities (97,622 ) Total identifiable net assets 12,088,790 Goodwill 9,657,221 Total $ 21,746,011

Inventory (Tables)

Inventory (Tables)	12 Months Ended
	Dec. 30, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventory consists of the following: December 30, December 31, Raw materials $ 9,562,962 $ 9,005,335 Work in progress 547,729 578,056 Finished goods 6,174,816 6,746,693 Total inventory $ 16,285,507 $ 16,330,084

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	12 Months Ended
	Dec. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant, and equipment consists of the following: December 30, December 31, Depreciable Life – Years Land $ 1,663,153 $ 1,663,153 Buildings 6,898,455 7,606,125 23 – 40 Shop equipment 21,165,566 16,654,811 7 – 10 Leasehold improvements 1,130,507 997,277 3 – 10 Office equipment 1,650,626 1,442,082 3 – 7 Mobile equipment 282,805 223,474 3 Construction in progress 1,514,082 1,253,760 Total cost 34,305,194 29,840,682 Accumulated depreciation 9,227,449 6,865,281 Net property, plant, and equipment $ 25,077,745 $ 22,975,401

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	Intangible assets of the Company consist of the following at December 30, 2018 : Gross Carrying Amount Accumulated Amortization Weighted Average Life – Years Customer contracts $ 26,523,065 $ 14,936,128 8.16 Trade names 4,673,044 1,452,276 16.43 Non-compete agreements 1,161,790 1,117,626 2.53 Unpatented technology 1,534,787 818,273 5.00 Total $ 33,892,686 $ 18,324,303 Intangible assets of the Company consist of the following at December 31, 2017 : Gross Carrying Accumulated Weighted Average Customer contracts $ 26,523,065 $ 11,588,946 8.16 Trade names 4,673,044 1,160,569 16.43 Non-compete agreements 1,161,790 995,233 2.53 Unpatented technology 1,534,787 512,156 5.00 Total $ 33,892,686 $ 14,256,904
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated amortization expense is as follows: 2019 $ 3,945,264 2020 3,913,627 2021 2,455,712 2022 1,305,314 2023 978,787 Thereafter 2,969,679 Total $ 15,568,383

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long term debt consists of the following: December 30, December 31, New US Term Loan, payable to lenders in quarterly installments of $337,500 through September 30, 2020, $575,000 through September 30, 2021, and $812,500 through November 7, 2023, with a lump sum due at maturity. The effective interest rate was 6.2699% per annum at December 30, 2018. At December 30, 2018 the balance of the New US Term Loan is presented net of a debt discount of $335,418 from costs paid to or on behalf of the lenders. $ 25,664,582 $ — US Term Loan, payable to lenders in quarterly installments of $318,750 through March 31, 2018, $425,000 through March 31, 2019, and $531,250 through March 31, 2021, with a lump sum due at maturity. The effective interest rate was 0% per annum at December 30, 2018. At December 30, 2018 the balance of the US Term Loan is presented net of a debt discount of $0 from costs paid to or on behalf of the lenders. — 14,060,065 US Term Loan II, payable to lenders in quarterly installments of $200,000 through March 31, 2021, with a lump sum due at maturity. The effective interest rate was 0% per annum at December 30, 2018. At December 30, 2018, the balance of the US Term Loan II is presented net of a debt discount of $0 from costs paid to or on behalf of the lenders. — 3,566,398 CA Term Loan, payable to lenders in quarterly installments of $375,000 through November 7, 2023, with a lump sum due at maturity. The effective interest rate was 6.2699% per annum at December 30, 2018. At December 30, 2018 the balance of the CA Term Loan is presented net of a debt discount of $146,814 from costs paid to or on behalf of the lenders. 11,853,186 12,962,381 Note payable to the seller of former owner of business Unique acquired in 2014 which is unsecured and subordinated to the New Credit Agreement. Interest accrues monthly at an annual rate of 6.00%. The note payable is due in full on February 6, 2019. 500,000 500,000 Other debt — — Total debt excluding revolver 38,017,768 31,088,844 Less current maturities 3,350,000 3,799,998 Long-term debt – Less current maturities $ 34,667,768 $ 27,288,846
Schedule of Maturities of Long-Term Debt	Maturities on the Company’s Revolver and other long term debt obligations for the remainder of the current fiscal year and future fiscal years: 2019 $ 3,350,000 2020 3,087,500 2021 4,037,500 2022 4,750,000 2023 41,561,662 Thereafter — Total 56,786,662 Discounts (482,232 ) Debt issuance costs (381,793 ) Total debt – Net $ 55,922,637

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 30, 2018
Port Huron Restructuring
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Liability	The tables below summarize the activity in the restructuring liability for the 52 weeks ended December 30, 2018 . Employee Termination Benefits Liability Other Exit Costs Liability Total Accrual balance at January 1, 2018 $ — $ — $ — Provision for estimated expenses incurred during the year 298,551 857,359 1,155,910 Payments made during the year (298,551 ) (857,359 ) (1,155,910 ) Accrual balance at December 30, 2018 — — —
Murfreesbboro Restructuring
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Liability	The tables below summarize the activity in the restructuring liability for the 52 weeks ended January 1, 2017. Employee Termination Benefits Liability Other Exit Costs Liability Total Accrual balance at January 3, 2016 $ 190,864 $ 63,327 $ 254,191 Provision for estimated expenses incurred during the year (51,951 ) 87,005 35,054 Payments made during the year (138,913 ) (150,332 ) (289,245 ) Accrual balance at January 1, 2017 $ — $ — $ —

Stock Incentive Plans (Tables)

Stock Incentive Plans (Tables)	12 Months Ended
	Dec. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of each option award is estimated on the grant date using a Black Scholes option pricing model that uses the weighted average assumptions noted in the following table. The expected volatility is based on the historical volatility of the stock of comparable companies. The expected term of the awards was estimated based on findings from academic studies investigating the average holding period for options adjusted for the Company’s size and risk factors. The risk free rate for periods within the contractual life of the option is based on the United States Treasury yield curve in effect at the time of grant. September 15, 2017 April 29, 2016 November 20, 2015 August 17, 2015 Expected volatility 40.00 % 40.00 % 35.00 % 38.00 % Dividend yield 7.00 % 5.00 % 5.00 % 4.80 % Expected term (in years) 5 5 5 5 Risk-free rate 1.81 % 1.28 % 1.7 % 1.58 % The fair value of each option award is estimated on the grant date using a Black Scholes option pricing model that uses the weighted average assumptions noted in the following table. The expected volatility is based on the historical volatility of the stock of comparable companies. The expected term of the awards was estimated based on findings from academic studies investigating the average holding period for options adjusted for the Company’s size and risk factors. The risk free rate for periods within the contractual life of the option is based on the United States Treasury yield curve in effect at the time of grant. September 15, 2017 April 29, 2016 January 1, 2014 July 17, 2013 Expected volatility 40.00 % 40.00 % 34.00 % 34.00 % Dividend yield 7.00 % 5.00 % — % — % Expected term (in years) 5 5 4 4 Risk-free rate 1.81 % 1.28 % 1.27 % 0.96 %
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity	A summary of option activity under both plans is presented below: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (1) Outstanding at December 31, 2017 602,480 $ 7.06 6.58 Granted — $ — 0.00 Exercised 33,800 $ 3.33 0 Forfeited or expired 5,000 $ 11.50 0 Outstanding at December 30, 2018 563,680 $ 7.25 5.61 $ — Vested and exercisable at December 30, 2018 502,800 $ 6.83 5.45 $ — (1) The aggregate intrinsic value above is obtained by subtracting the weighted average exercise price from the estimated fair value of the underlying shares as of December 30, 2018 and multiplying this result by the related number of options outstanding and exercisable at December 30, 2018 . The estimated fair value of the shares is based on the closing stock price of $4.41 as of December 30, 2018 . As of December 30, 2018 there is no intrinsic value as the exercise prices is greater that the estimated fair value.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 30, 2018
Income Tax Disclosure [Abstract]
Schedule of Income Before Income Tax, Domestic and Foreign	Income before income taxes for U.S. and Non-U.S. operations are as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 U.S. income $ 1,017,194 $ 3,877,650 8,820,049 Non-U.S. income 3,543,376 3,741,921 1,121,690 Income before income taxes $ 4,560,570 $ 7,619,571 $ 9,941,739
Schedule of Components of Income Tax Expense (Benefit)	The components of the income tax provision included in the consolidated statements of operations are all attributable to continuing operations and are detailed as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Current tax expense: Federal $ (27,056 ) $ 1,206,992 $ 3,340,070 State 61,081 292,702 355,748 Foreign 1,119,222 1,185,688 727,450 Total 1,153,247 2,685,382 4,423,268 Deferred tax expense: Federal (123,789 ) (1,165,546 ) (766,716 ) State (13,863 ) (235,622 ) (68,069 ) Foreign (153,626 ) (151,334 ) (330,864 ) Total (291,278 ) (1,552,502 ) (1,165,649 ) Total income tax expense $ 861,969 $ 1,132,880 $ 3,257,619
Schedule of Current and Noncurrent deferred taxes	The following table summarizes the components of temporary differences and carryforwards that give rise to deferred tax assets and liabilities: December 30, December 31, Deferred tax assets (liabilities): Allowance for doubtful accounts $ 174,442 $ 194,684 Inventories 140,034 118,813 Accrued payroll and benefits 533,294 491,214 Excess interest expense 279,017 — Foreign tax credit 620,923 — Other 156,471 44,820 Deferred tax asset before valuation allowance 1,904,181 849,531 Valuation allowance (620,923 ) — Deferred tax asset 1,283,258 849,531 Property, plant, and equipment (3,082,182 ) (2,534,440 ) Goodwill and intangible assets — (405,293 ) Deferred tax liability (3,082,182 ) $ (2,939,733 ) Total deferred tax liability $ (1,798,924 ) $ (2,090,202 )
Schedule of Income Taxes Based on Federal Tax Rate	A reconciliation of taxes on income from continuing operations based on the statutory federal income tax rate to the provision for income taxes is as follows: Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Income tax expense, computed at 21% of pretax income for 2018 and 34% pretax income for 2017 and 2016 $ 957,720 $ 2,590,654 $ 3,380,191 State income taxes, net of federal benefit 22,683 66,607 193,070 Foreign tax rate differential 252,025 (206,432 ) (51,388 ) U.S. Tax on non-U.S. income 320,000 — — Impact of U.S. tax refor (80,453 ) (559,286 ) — Research and Development credits (503,785 ) (681,957 ) — Other (106,221 ) (76,706 ) (264,254 ) Total provision for income taxes $ 861,969 $ 1,132,880 $ 3,257,619

Operating Leases (Tables)

Operating Leases (Tables)	12 Months Ended
	Dec. 30, 2018
Leases, Operating [Abstract]
Schedule of Future Minimum Lease Payments	Future minimum lease payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year are as follows at December 30, 2018 : 2019 $ 1,957,954 2020 1,404,215 2021 560,374 2022 429,475 2023 35,446 Thereafter — Total $ 4,387,464

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of basic and diluted earnings per share. Fifty-Two Weeks Ended December 30, 2018 Fifty-Two Weeks Ended December 31, 2017 Fifty-Two Weeks Ended January 1, 2017 Basic earnings per share calculation: Net income $ 3,698,601 $ 6,486,691 $ 6,684,120 Net income attributable to common stockholders $ 3,698,601 $ 6,486,691 $ 6,684,120 Weighted average shares outstanding 9,770,011 9,750,948 9,678,316 Net income per share-basic $ 0.38 $ 0.67 $ 0.69 Diluted earnings per share calculation: Net income $ 3,698,601 $ 6,486,691 $ 6,684,120 Weighted average shares outstanding 9,770,011 9,750,948 9,678,316 Effect of dilutive securities: Stock options (1)(2)(3) 138,017 147,316 204,948 Warrants (1)(2)(3) 670 1,154 13,019 Diluted weighted average shares outstanding 9,908,698 9,899,418 9,896,283 Net income per share-diluted $ 0.37 $ 0.66 $ 0.68 (1) Options to purchase 311,480 shares of common stock remaining to be exercised under the 2013 plan and warrants to purchase 1,185 shares of common stock remaining to be exercised, were considered in the computation of diluted earnings per share using the treasury stock method in the 2018 calculation. Options to purchase 220,000 shares of common stock that were granted in August 2015 and November 2015 remaining to be exercised, as discussed in Note 9, under the 2014 plan, options to purchase 7,200 shares of common stock and 5,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in April 2016, options to purchase 5,000 and 15,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in September 2017, and warrants to purchase 141,000 shares of common stock issued to the underwriters of the Company's IPO in July 2015, were not included in the computation of diluted earnings per share in the 2018 period because the effect would have been anti-dilutive. (2) Options to purchase 345,280 shares of common stock remaining to be exercised under the 2013 plan, and warrants to purchase 1,185 shares of common stock remaining to be exercised, were considered in the computation of diluted earnings per share using the treasury stock method in the 2017 calculation. Options to purchase 225,000 shares of common stock that were granted in August 2015 and November 2015 remaining to be exercised, as discussed in Note 9, under the 2014 plan, options to purchase 7,200 shares of common stock and 5,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in April 2016, 5,000 and 15,000 shares of common stock that were granted under the 2013 and 2014 plan, respectively, in September 2017, and warrants to purchase 141,000 shares of common stock issued to the underwriters of the Company's IPO in July 2015, were not included in the computation of diluted earnings per share in the 2017 period because the effect would have been anti-dilutive. (3) Options to purchase 392,680 shares of common stock remaining to be exercised under the 2013 plan, warrants to purchase 2,286 shares of common stock remaining to be exercised, warrants to purchase 141,000 shares issued to the underwriters in July 2015 as noted in Note 1, and options to purchase 15,000 shares of common stock that were granted in August 2015, as discussed in Note 9 under the 2014 plan, were considered in the computation of diluted earnings per share using the treasury stock method in the 2016 calculation. Options to purchase 210,000 shares of common stock that were granted on January 1, 2014 remaining to be exercised under the 2013 plan and 12,200 shares of common stock that were granted under the 2013 and 2014 plan in April 2016 as noted in Note 9, were not included in the computation of diluted earnings per share in the 2016 period because the effect would have been anti-dilutive.

Selected Quarterly Financial _2

Selected Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	The following tables set forth a condensed summary of the Company's unaudited selected quarterly results for each of the quarters in fiscal 2018 and 2017. Thirteen Weeks Ended April 1, 2018 Thirteen Weeks Ended July 1, 2018 Thirteen Weeks Ended September 30, 2018 Thirteen Weeks Ended December 30, 2018 2018 Net sales $ 47,304,153 $ 45,742,370 $ 42,051,968 $ 39,811,250 Gross profit $ 11,080,147 $ 11,189,022 $ 8,523,511 $ 8,542,057 Operating income 2,670,898 3,272,399 1,121,781 1,332,793 Net income $ 1,511,889 $ 1,751,009 $ 626,823 $ (191,120 ) Net income per share Basic $ 0.15 $ 0.18 $ 0.06 $ (0.02 ) Diluted $ 0.15 $ 0.18 $ 0.06 $ (0.02 ) Thirteen Weeks Ended April 2, 2017 Thirteen Weeks Ended July 2, 2017 Thirteen Weeks Ended October 1, 2017 Thirteen Weeks Ended December 31, 2017 2017 Net sales $ 47,857,096 $ 44,518,039 $ 41,231,366 $ 41,681,481 Gross profit $ 11,107,161 $ 10,666,091 $ 8,974,926 $ 9,305,356 Operating income $ 3,515,457 $ 3,070,774 $ 1,706,114 $ 1,994,325 Net income $ 2,046,837 $ 1,668,410 $ 715,106 $ 2,056,338 Net income per share Basic $ 0.21 $ 0.17 $ 0.07 $ 0.21 Diluted $ 0.21 $ 0.17 $ 0.07 $ 0.21

Nature of Business and Signif_3

Nature of Business and Significant Accounting Policies (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2018USD ($)	Dec. 30, 2018USD ($)reporting_unitsegment	Dec. 31, 2017USD ($)	Jan. 01, 2017USD ($)
Accounting Policies [Abstract]
Number of operating segments | segment		1
Number of reportable segments | segment		1
Class of Stock [Line Items]
Allowance for doubtful accounts receivable		$ 684,996	$ 768,500
Number of reporting units for goodwill testing Purposes | reporting_unit		1
Impairment charge		$ 0	0	$ 0
Reporting unit, fair value in excess of carrying amount		10.00%
Reporting unit, fair value in excess of carrying amount, discount rate		13.00%
Reporting unit, fair value in excess of carrying amount, EBITDA margin and terminal growth rate		3.00%
Unamortized debt issuance expense		$ 381,793	232,045
Unamortized discount		482,232	242,059
Loss on extinguishment of debt		59,110	0	60,202
Amortization of debt issuance costs		147,291	148,948	127,556
Concentration Risk [Line Items]
Dividend income		50,169	0	0
Impairment loss		0	0	0
Unrecognized tax benefits		0	0
Income tax penalties and interest	$ 0	$ 0	$ 0	$ 0
Labor force concentration risk | Collective Bargaining Arrangements Expiring August 2019 | Workforce Subject to Collective Bargaining Arrangements
Concentration Risk [Line Items]
Concentration risk (percentage)		33.00%
Labor force concentration risk | Collective Bargaining Arrangements Expiring February 2020 | Workforce Subject to Collective Bargaining Arrangements
Concentration Risk [Line Items]
Concentration risk (percentage)		6.00%
Geographic concentration risk | Sales revenue, net | Mexico
Concentration Risk [Line Items]
Concentration risk (percentage)		17.00%	15.00%	12.00%
Geographic concentration risk | Sales revenue, net | Canada
Concentration Risk [Line Items]
Concentration risk (percentage)		10.00%	10.00%	8.00%
Geographic concentration risk | Sales revenue, net | Other foreign countries
Concentration Risk [Line Items]
Concentration risk (percentage)		2.00%	1.00%	1.00%
Geographic concentration risk | Production risk | Mexico
Concentration Risk [Line Items]
Concentration risk (percentage)		17.00%	15.00%	12.00%
Geographic concentration risk | Production risk | Canada
Concentration Risk [Line Items]
Concentration risk (percentage)		10.00%	9.00%	6.00%
General Motors Company | Customer concentration risk | Sales revenue, net
Concentration Risk [Line Items]
Concentration risk (percentage)		15.00%	14.00%	15.00%
General Motors Company | Customer concentration risk | Accounts receivable
Concentration Risk [Line Items]
Concentration risk (percentage)		14.00%	11.00%
Fiat Chrysler Automobile | Customer concentration risk | Sales revenue, net
Concentration Risk [Line Items]
Concentration risk (percentage)		16.00%	13.00%	11.00%
Ford Motor Company | Customer concentration risk | Sales revenue, net
Concentration Risk [Line Items]
Concentration risk (percentage)		11.00%	11.00%	12.00%
Senior credit facility | Line of credit | Revolving credit facility
Class of Stock [Line Items]
Unamortized debt issuance expense		$ 172,600
Loss on extinguishment of debt		59,110
Accounts payable
Concentration Risk [Line Items]
Checks issued in excess of available cash		$ 1,802,712	$ 2,919,460

Business Combinations - Narrati

Business Combinations - Narrative (Details)	Apr. 29, 2016USD ($)shares	Aug. 31, 2016USD ($)	Dec. 30, 2018aquisition	May 01, 2018USD ($)	Dec. 31, 2017aquisition	Apr. 30, 2017CAD ($)	Apr. 30, 2017USD ($)	Jan. 01, 2017USD ($)	May 01, 2021CAD ($)	Apr. 30, 2019CAD ($)
Business Acquisition [Line Items]
Number of new acquisitions | aquisition			0		0
Intasco
Business Acquisition [Line Items]
Payments to acquire business	$ 21,049,045
Percentage of voting interests acquired	100.00%
Total consideration	$ 890,726
Equity interests acquired (in shares) | shares	70,797
Working capital adjustment	$ 126,047
Amount owed at closing		$ 212,823
Acquisition transaction costs	852,580
Tax deductible portion of goodwill	$ 7,267,507
Pro forma revenue								$ 12,501,386
Pro forma income								$ 131,433
Intasco | United States
Business Acquisition [Line Items]
Operating lease, rent expense, term of lease	2 years
Operating lease, rent expense				$ 4,080			$ 4,000
Intasco | Canada
Business Acquisition [Line Items]
Operating lease, rent expense, term of lease	5 years
Operating lease, rent expense						$ 16,750
Intasco | Scenario, Forecast | Canada
Business Acquisition [Line Items]
Operating lease, rent expense									$ 17,427	$ 17,085

Business Combinations - Schedul

Business Combinations - Schedule of Business Acquisitions by Acquisition (Details) - USD ($)	Dec. 30, 2018	Dec. 31, 2017	Apr. 29, 2016
Business Acquisition [Line Items]
Goodwill	$ 28,871,179	$ 28,871,179
Intasco
Business Acquisition [Line Items]
Cash			$ 18,250
Accounts receivable			2,146,082
Inventory			2,485,781
Other current assets			74,194
Property, plant, and equipment			861,491
Identifiable intangible assets			7,316,694
Accounts payable and accrued liabilities			(716,080)
Deferred tax liabilities			(97,622)
Total identifiable net assets			12,088,790
Goodwill			9,657,221
Total			$ 21,746,011

Inventory - Schedule of Invento

Inventory - Schedule of Inventory (Details) - USD ($)	Dec. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 9,562,962	$ 9,005,335
Work in progress	547,729	578,056
Finished goods	6,174,816	6,746,693
Total inventory	$ 16,285,507	$ 16,330,084

Inventory - Narrative (Details)

Inventory - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 30, 2018
Inventory [Line Items]
Allowance for obsolete inventory reserve	$ 434,712		$ 557,066
Inventory – net	16,330,084		16,285,507
Fair value adjustment to inventory | Intasco
Inventory [Line Items]
Provisional information, adjustment, inventory		$ 318,518
Fair value adjustment to inventory | Intasco | Cost of Sales
Inventory [Line Items]
Provisional information, adjustment, inventory	318,518
Fair value adjustment to inventory | Intasco | Inventory
Inventory [Line Items]
Provisional information, adjustment, inventory	0
Mexico
Inventory [Line Items]
Inventory – net	3,173,944		3,340,748
Canada
Inventory [Line Items]
Inventory – net	$ 1,072,430		$ 1,177,256

Property, Plant, and Equipmen_2

Property, Plant, and Equipment - Schedule of Property, Plant, and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 34,305,194	$ 29,840,682
Accumulated depreciation	9,227,449	6,865,281
Net property, plant, and equipment	25,077,745	22,975,401
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment	1,663,153	1,663,153
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 6,898,455	7,606,125
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	23 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	40 years
Shop equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 21,165,566	16,654,811
Shop equipment | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	7 years
Shop equipment | Maximum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	10 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,130,507	997,277
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	3 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	10 years
Office equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,650,626	1,442,082
Office equipment | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	3 years
Office equipment | Maximum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	7 years
Mobile equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 282,805	223,474
Mobile equipment | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life – Years	3 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,514,082	$ 1,253,760

Property, Plant, and Equipmen_3

Property, Plant, and Equipment - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 2,562,743	$ 2,197,415	$ 1,804,110
Property, Plant, and Equipment – Net	25,077,745	22,975,401
Mexico
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment – Net	3,209,973	2,659,920
Canada
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment – Net	$ 656,183	$ 684,431

Intangible Assets - Schedule of

Intangible Assets - Schedule of intangible assets by major class (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 33,892,686	$ 33,892,686
Accumulated Amortization	18,324,303	14,256,904
Amortization expense	$ 4,067,399	4,122,560	$ 3,697,564
Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life – Years	8 years 11 months 16 days
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,523,065	26,523,065
Accumulated Amortization	$ 14,936,128	$ 11,588,946
Customer contracts | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life – Years	8 years 1 month 27 days	8 years 1 month 27 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,673,044	$ 4,673,044
Accumulated Amortization	$ 1,452,276	$ 1,160,569
Trade names | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life – Years	16 years 5 months 5 days	16 years 5 months 5 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,161,790	$ 1,161,790
Accumulated Amortization	$ 1,117,626	$ 995,233
Non-compete agreements | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life – Years	2 years 6 months 10 days	2 years 6 months 10 days
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,534,787	$ 1,534,787
Accumulated Amortization	$ 818,273	$ 512,156
Unpatented technology | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life – Years	5 years	5 years

Intangible Assets - Finite-live

Intangible Assets - Finite-lived intangible assets, future amortization expense schedule (Details) - USD ($)	Dec. 30, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2,019	$ 3,945,264
2,020	3,913,627
2,021	2,455,712
2,022	1,305,314
2,023	978,787
Thereafter	2,969,679
Total	$ 15,568,383	$ 19,635,782

Long-term Debt - Narrative (Det

Long-term Debt - Narrative (Details) - USD ($)	Nov. 08, 2018	Apr. 29, 2016	Dec. 30, 2018	Nov. 01, 2018	Sep. 20, 2018	Dec. 31, 2017	Aug. 18, 2017
Debt Instrument [Line Items]
Notes Payable			$ 38,017,768			$ 31,088,844
Senior credit facility, second amendment | Line of credit | Revolving credit facility
Debt Instrument [Line Items]
Letters of credit outstanding, amount			$ 100,000
New credit agreement | Line of credit | Secured debt
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 62,000,000
Maximum increase to principal amount		10,000,000
New credit agreement | Line of credit | Secured debt | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			1.75%
New credit agreement | Line of credit | Secured debt | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			2.75%
New credit agreement | Line of credit | Secured debt | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			2.75%
New credit agreement | Line of credit | Secured debt | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			3.75%
New credit agreement | Letter of credit | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity		2,000,000
New revolver | Revolving credit facility
Debt Instrument [Line Items]
Long-term line of credit			$ 18,286,662
New revolver | Line of credit | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity		30,000,000	$ 11,613,338	$ 30,000,000	$ 32,500,000
Proceeds from lines of credit		22,900,000
Long-term line of credit							$ 4,000,000
Effective interest rate			6.27%
US term loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Debt instrument, face amount		17,000,000
Notes Payable			$ 0			14,060,065
Effective interest rate			0.00%
CA term loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 15,000,000
Notes Payable			$ 11,853,186			12,962,381
Effective interest rate			6.27%
US Term Loan II | Line of credit | Secured debt
Debt Instrument [Line Items]
Debt instrument, face amount							$ 4,000,000
Notes Payable			$ 0			3,566,398
Effective interest rate			0.00%
New US Term Loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Notes Payable			$ 25,664,582			$ 0
Effective interest rate			6.27%
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | US term loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Maximum increase to principal amount	$ 26,000,000
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | CA term loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Notes Payable			$ 12,000,000
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | Amended And Restated Credit Agreement | Line Of Credit For Capital Expenditures
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 5,000,000
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | Amended And Restated Credit Agreement | Line of credit
Debt Instrument [Line Items]
Debt instrument, term	5 years
Debt instrument, term to fund capital expenditures	2 years
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | Amended And Restated Credit Agreement | Line of credit | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 30,000,000
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | US Term Loan And Term Loan II | Line of credit | Secured debt
Debt Instrument [Line Items]
Debt instrument, face amount	15,900,000
Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | New US Term Loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Debt instrument, face amount	26,000,000
Debt Instrument, Periodic Payment, Installments Through September Thirty Two Thousand Twenty | Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | New US Term Loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Periodic principal amount	337,500
Debt Instrument, Periodic Payment, Installments Through September Thirty Two Thousand Twenty One | Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | New US Term Loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Periodic principal amount	575,000
Debt Instrument, Periodic Payment, Installments Through Maturity | Unique Fabricating NA, Inc. And Unique-Intasco Canada, Inc. | New US Term Loan | Line of credit | Secured debt
Debt Instrument [Line Items]
Periodic principal amount	$ 812,500

Long-term Debt - Schedule of lo

Long-term Debt - Schedule of long-term debt (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt excluding revolver	$ 38,017,768	$ 31,088,844
Less current maturities	3,350,000	3,799,998
Long-term debt – Less current maturities	34,667,768	27,288,846
Unamortized discount	482,232	242,059
Notes payable, other payables
Debt Instrument [Line Items]
Total debt excluding revolver	$ 500,000	$ 500,000
Stated interest rate	6.00%	6.00%
Other debt
Debt Instrument [Line Items]
Total debt excluding revolver	$ 0	$ 0
Line of credit | New US Term Loan | Secured debt
Debt Instrument [Line Items]
Total debt excluding revolver	$ 25,664,582	0
Effective interest rate	6.27%
Unamortized discount	$ 335,418
Line of credit | New US Term Loan | Secured debt | Installments through March 31, 2018
Debt Instrument [Line Items]
Periodic principal amount	337,500
Line of credit | New US Term Loan | Secured debt | Installments through March 31, 2019
Debt Instrument [Line Items]
Periodic principal amount	575,000
Line of credit | New US Term Loan | Secured debt | Installments through March 31, 2021
Debt Instrument [Line Items]
Periodic principal amount	812,500
Line of credit | US term loan | Secured debt
Debt Instrument [Line Items]
Total debt excluding revolver	$ 0	14,060,065
Effective interest rate	0.00%
Unamortized discount	$ 0
Line of credit | US term loan | Secured debt | Installments through March 31, 2018
Debt Instrument [Line Items]
Periodic principal amount	318,750
Line of credit | US term loan | Secured debt | Installments through March 31, 2019
Debt Instrument [Line Items]
Periodic principal amount	425,000
Line of credit | US term loan | Secured debt | Installments through March 31, 2021
Debt Instrument [Line Items]
Periodic principal amount	531,250
Line of credit | US Term Loan II | Secured debt
Debt Instrument [Line Items]
Total debt excluding revolver	$ 0	3,566,398
Effective interest rate	0.00%
Unamortized discount	$ 33,602
Line of credit | US Term Loan II | Secured debt | Installments through March 31, 2018
Debt Instrument [Line Items]
Periodic principal amount	200,000
Line of credit | US Term Loan II | Secured debt | Installments through March 31, 2019
Debt Instrument [Line Items]
Periodic principal amount	200,000
Line of credit | US Term Loan II | Secured debt | Installments through March 31, 2021
Debt Instrument [Line Items]
Periodic principal amount	200,000
Line of credit | CA term loan | Secured debt
Debt Instrument [Line Items]
Total debt excluding revolver	$ 11,853,186	$ 12,962,381
Effective interest rate	6.27%
Unamortized discount	$ 146,814
Line of credit | CA term loan | Secured debt | Installments through March 31, 2018
Debt Instrument [Line Items]
Periodic principal amount	$ 375,000

Long-term Debt - Schedule of re

Long-term Debt - Schedule of repayment of maturities (Details) - USD ($)	Dec. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
2,019	$ 3,350,000
2,020	3,087,500
2,021	4,037,500
2,022	4,750,000
2,023	41,561,662
Thereafter	0
Total	56,786,662
Discounts	(482,232)	$ (242,059)
Debt issuance costs	(381,793)
Total debt – Net	$ 55,922,637

Derivative Financial Instrume_2

Derivative Financial Instruments (Details) - USD ($)

12 Months Ended

Dec. 30, 2018

Dec. 31, 2017

Nov. 08, 2023

Dec. 31, 2021

Sep. 30, 2020

Jun. 28, 2019

Nov. 30, 2018

Jun. 29, 2018

Oct. 02, 2017

Jun. 30, 2017

Jun. 30, 2016

Jun. 29, 2016

Interest rate swap | Not designated as hedging instrument

Derivatives, Fair Value [Line Items]

Fixed interest rate

3.075%

1.093%

1.055%

Notional amount

$ 5,037,500

$ 1,900,000

$ 16,681,250

Notional amount quarterly decrease

$ 100,000

$ 318,750

Derivative fair value assets (liabilities)

$ (292,191)

$ 159,320

Interest rate swap | Not designated as hedging instrument | Interest expense

Derivatives, Fair Value [Line Items]

Monthly settlements

(113,025)

$ (1,159)

Interest rate swap | Not designated as hedging instrument | Scenario, Forecast

Derivatives, Fair Value [Line Items]

Notional amount

$ 17,475,000

$ 17,540,625

Notional amount quarterly decrease

$ 609,375

$ 431,250

$ 153,125

Notional amount quarterly increase

378,125

Foreign exchange forward | Designated as hedging instrument

Derivatives, Fair Value [Line Items]

Notional amount

$ 3,300,000

Derivative fair value assets (liabilities)

0

Derivative Instrument, Periodic Payment, Installment Periods Through June Twenty Nine Two Thousand Eighteen | Interest rate swap | Not designated as hedging instrument

Derivatives, Fair Value [Line Items]

Notional amount quarterly decrease

$ 425,000

Derivative Instrument, Periodic Payment, Installment Periods Through June Twenty Eight Two Thousand Nineteen | Interest rate swap | Not designated as hedging instrument | Scenario, Forecast

Derivatives, Fair Value [Line Items]

Notional amount quarterly decrease

$ 531,250

Current Assets | Interest rate swap | Not designated as hedging instrument

Derivatives, Fair Value [Line Items]

Derivative fair value assets (liabilities)

102,963

Other Noncurrent Liabilities | Interest rate swap | Not designated as hedging instrument

Derivatives, Fair Value [Line Items]

Derivative fair value assets (liabilities)

$ (395,154)

Restructuring - Narrative (Deta

Restructuring - Narrative (Details)	Oct. 18, 2018USD ($)	Oct. 31, 2016USD ($)	Oct. 27, 2015employee	Jul. 31, 2018employee	Jun. 30, 2018employee	Dec. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2017USD ($)
Restructuring Cost and Reserve [Line Items]
Net book value of facility expected to be sold after closure						$ 25,077,745	$ 22,975,401
Proceeds from sale of property and equipment						904,237	51,847	$ 2,187,366
Fort Smith, Arkansas | Manufacturing Facility
Restructuring Cost and Reserve [Line Items]
Net book value of facility expected to be sold after closure	$ 733,059
Proceeds from sale of property and equipment	876,032
Gain on sale of property, plant, and equipment	$ 142,973
Fort Smith Restructuring
Restructuring Cost and Reserve [Line Items]
Workforce reduction due to plant closure | employee				20
Fort Smith Restructuring | One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred						233,782
Fort Smith Restructuring | Other Costs
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred						559,461
Port Huron Restructuring
Restructuring Cost and Reserve [Line Items]
Workforce reduction due to plant closure | employee					7
Port Huron Restructuring | One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred						64,768
Port Huron Restructuring | Other Costs
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred						$ 297,899
Murfreesbboro Restructuring
Restructuring Cost and Reserve [Line Items]
Workforce reduction due to plant closure | employee			30
Amount of restructuring cost incurred							0
Murfreesbboro Restructuring | Buildings
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of property and equipment		$ 2,175,185
Gain on sale of property, plant, and equipment		147,413
Net book value of asset held for sale		$ 2,033,327
Murfreesbboro Restructuring | One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred							(51,951)
Murfreesbboro Restructuring | Other Costs
Restructuring Cost and Reserve [Line Items]
Amount of restructuring cost incurred							$ 87,005

Restructuring - Liability (Deta

Restructuring - Liability (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	$ 1,155,910	$ 0	$ 35,054
Port Huron Restructuring
Restructuring Reserve [Roll Forward]
Beginning balance	0
Provision for estimated expenses incurred during the year	1,155,910
Payments made during the year	(1,155,910)
Ending balance	0	0
Port Huron Restructuring | Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Beginning balance	0
Provision for estimated expenses incurred during the year	298,551
Payments made during the year	(298,551)
Ending balance	0	0
Port Huron Restructuring | Other Exit Costs Liability
Restructuring Reserve [Roll Forward]
Beginning balance	0
Provision for estimated expenses incurred during the year	857,359
Payments made during the year	(857,359)
Ending balance	0	0
Murfreesbboro Restructuring
Restructuring Reserve [Roll Forward]
Beginning balance	0	254,191
Provision for estimated expenses incurred during the year		35,054
Payments made during the year		(289,245)
Ending balance		0	254,191
Murfreesbboro Restructuring | Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Beginning balance	0	190,864
Provision for estimated expenses incurred during the year		(51,951)
Payments made during the year		(138,913)
Ending balance		0	190,864
Murfreesbboro Restructuring | Other Exit Costs Liability
Restructuring Reserve [Roll Forward]
Beginning balance	$ 0	63,327
Provision for estimated expenses incurred during the year		87,005
Payments made during the year		(150,332)
Ending balance		$ 0	$ 63,327

Stock Incentive Plans - Narrati

Stock Incentive Plans - Narrative (Details)

Sep. 15, 2017$ / sharesshares

Apr. 29, 2016$ / sharesshares

Nov. 20, 2015$ / sharesshares

Aug. 17, 2015$ / sharesshares

Jan. 01, 2014$ / sharesshares

Jul. 17, 2013$ / sharesshares

Dec. 30, 2018USD ($)award_grant

Dec. 31, 2017USD ($)

Jan. 01, 2017USD ($)

Jun. 30, 2016shares

Jan. 03, 2016shares

Dec. 29, 2013shares

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Number of award grants | award_grant

4

Income tax benefit from share based compensation expense | $

$ 24,816

$ 22,360

$ 54,549

Selling, General and Administrative Expenses

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Allocated share-based compensation expense | $

131,302

$ 150,368

$ 166,476

Employee Stock Option

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Unrecognized compensation cost | $

$ 100,320

Compensation cost, weighted average period (in years)

1 year 2 months 4 days

The 2013 Stock Incentive Plan

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Common stock shares reserved for future issuance (in shares)

495,000

Shares granted (in shares)

5,000

7,200

120,000

375,000

Granted (in dollars per share) | $ / shares

$ 7.65

$ 12.58

$ 3.33

$ 3.33

Weighted average grant date fair value (in dollars per share) | $ / shares

$ 1.41

$ 2.80

$ 0.35

$ 0.23

The 2013 Stock Incentive Plan | Employee Stock Option

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Number of shares available for grant (in shares)

495,000

Expiration period

10 years

The 2013 Stock Incentive Plan | Employee Stock Option | Award vesting on grant date

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

The 2013 Stock Incentive Plan | Employee Stock Option | Award vesting, first anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

The 2013 Stock Incentive Plan | Employee Stock Option | Award vesting, second anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

The 2013 Stock Incentive Plan | Employee Stock Option | Award vesting, third anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

The 2013 Stock Incentive Plan | Employee Stock Option | Award vesting, fourth anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

2014 Omnibus Performance Award Plan

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Shares granted (in shares)

15,000

5,000

15,000

230,000

Granted (in dollars per share) | $ / shares

$ 7.65

$ 12.58

$ 11.50

$ 12.50

Weighted average grant date fair value (in dollars per share) | $ / shares

$ 1.41

$ 2.80

$ 2.23

$ 2.72

Number of shares authorized (in shares)

450,000

250,000

2014 Omnibus Performance Award Plan | Director

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Shares granted (in shares)

45,000

2014 Omnibus Performance Award Plan | Employee

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Shares granted (in shares)

185,000

2014 Omnibus Performance Award Plan | Employee Stock Option | Award vesting on grant date

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

2014 Omnibus Performance Award Plan | Employee Stock Option | Award vesting, first anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

2014 Omnibus Performance Award Plan | Employee Stock Option | Award vesting, second anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

2014 Omnibus Performance Award Plan | Employee Stock Option | Award vesting, third anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

2014 Omnibus Performance Award Plan | Employee Stock Option | Award vesting, fourth anniversary

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Award vesting rights, percentage

20.00%

Stock Incentive Plans - Valuati

Stock Incentive Plans - Valuation Assumptions (Details) - Employee Stock Option	Sep. 15, 2017	Apr. 29, 2016	Nov. 20, 2015	Aug. 17, 2015	Jan. 01, 2014	Jul. 17, 2013
The 2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	40.00%	40.00%			34.00%	34.00%
Dividend yield	7.00%	5.00%			0.00%	0.00%
Expected term (in years)	5 years	5 years			4 years	4 years
Risk-free rate	1.81%	1.28%			1.27%	0.96%
2014 Omnibus Performance Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	40.00%	40.00%	35.00%	38.00%
Dividend yield	7.00%	5.00%	5.00%	4.80%
Expected term (in years)	5 years	5 years	5 years	5 years
Risk-free rate	1.81%	1.28%	1.70%	1.58%

Stock Incentive Plans - Schedul

Stock Incentive Plans - Schedule of stock options and stock awards (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017
Aggregate Intrinsic Value
Share price (in dollars per share)	$ 4.41
The 2013 Plan and The 2014 Plan
Number of Shares
Outstanding at beginning of period (in shares)	602,480
Granted (in shares)	0
Exercised (in shares)	33,800
Forfeited or expired (in shares)	5,000
Outstanding at end of period (in shares)	563,680	602,480
Vested and exercisable (in shares)	502,800
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 7.06
Granted (in dollars per share)	0
Exercised (in dollars per share)	3.33
Forfeited or expired (in dollars per share)	11.50
Outstanding at end of period (in dollars per share)	7.25	$ 7.06
Vested and exercisable (in dollars per share)	$ 6.83
Weighted Average Remaining Contractual Term (in years)
Outstanding weighted average remaining contractual term	5 years 7 months 8 days	6 years 6 months 29 days
Granted	0 years
Exercised	0 years
Forfeited or expired	0 years
Vested and exercisable	5 years 5 months 12 days
Aggregate Intrinsic Value
Outstanding at end of period, aggregate intrinsic value	$ 0
Vested and exercisable, aggregate intrinsic value	$ 0

Income Taxes - Schedule of inco

Income Taxes - Schedule of income before income taxes (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Tax Disclosure [Abstract]
U.S. income	$ 1,017,194	$ 3,877,650	$ 8,820,049
Non-U.S. income	3,543,376	3,741,921	1,121,690
Income before income taxes	$ 4,560,570	$ 7,619,571	$ 9,941,739

Income Taxes - Schedule of comp

Income Taxes - Schedule of components of income tax expense (benefit) (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Current tax expense:
Federal	$ (27,056)	$ 1,206,992	$ 3,340,070
State	61,081	292,702	355,748
Foreign	1,119,222	1,185,688	727,450
Total	1,153,247	2,685,382	4,423,268
Deferred tax expense:
Federal	(123,789)	(1,165,546)	(766,716)
State	(13,863)	(235,622)	(68,069)
Foreign	(153,626)	(151,334)	(330,864)
Total	(291,278)	(1,552,502)	(1,165,649)
Total income tax expense	$ 861,969	$ 1,132,880	$ 3,257,619

Income Taxes - Schedule of defe

Income Taxes - Schedule of deferred taxes (Details) - USD ($)	Dec. 30, 2018	Dec. 31, 2017
Deferred tax assets (liabilities):
Allowance for doubtful accounts	$ 174,442	$ 194,684
Inventories	140,034	118,813
Accrued payroll and benefits	533,294	491,214
Excess interest expense	279,017	0
Foreign tax credit	620,923	0
Other	156,471	44,820
Deferred tax asset before valuation allowance	1,904,181	849,531
Valuation allowance	(620,923)	0
Deferred tax asset	1,283,258	849,531
Property, plant, and equipment	(3,082,182)	(2,534,440)
Goodwill and intangible assets	0	(405,293)
Deferred tax liability	(3,082,182)	(2,939,733)
Total deferred tax liability	$ (1,798,924)	$ (2,090,202)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Operating Loss Carryforwards [Line Items]
Tax rate for Income tax Expense		21.00%	34.00%	34.00%
Valuation allowance		$ 620,923	$ 0
Deferred tax liability due to lowering of the U.S. corporate tax rate			(1,357,472)
One time transition tax due to lowering of corporate tax rate			798,186
Impact of U.S. tax reform		(80,453)	(559,286)	$ 0
U.S. Tax on non-U.S. income		320,000	0	0
Deferred tax asset, interest expense		279,017
Unrecognized tax benefits		0	0
Income tax penalties and interest	$ 0	$ 0	$ 0	$ 0

Income Taxes - Schedule of in_2

Income Taxes - Schedule of income taxes based on federal tax rate (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Tax Disclosure [Abstract]
Tax rate for Income tax Expense	21.00%	34.00%	34.00%
Income tax expense, computed at 21% of pretax income for 2018 and 34% pretax income for 2017 and 2016	$ 957,720	$ 2,590,654	$ 3,380,191
State income taxes, net of federal benefit	22,683	66,607	193,070
Foreign tax rate differential	252,025	(206,432)	(51,388)
U.S. Tax on non-U.S. income	320,000	0	0
Impact of U.S. tax reform	(80,453)	(559,286)	0
Research and Development credits	(503,785)	(681,957)	0
Other	(106,221)	(76,706)	(264,254)
Total income tax expense	$ 861,969	$ 1,132,880	$ 3,257,619

Operating Leases - Narrative (D

Operating Leases - Narrative (Details)	12 Months Ended
	Dec. 30, 2018USD ($)lease	Dec. 31, 2017USD ($)	Jan. 01, 2017USD ($)
Leases, Operating [Abstract]
Number of leases provided for escalating rents | lease	5
Operating lease, total rent expense | $	$ 2,346,259	$ 2,198,051	$ 2,019,073

Operating Leases - Schedule of

Operating Leases - Schedule of future minimum lease payments (Details)	Dec. 30, 2018USD ($)
Leases, Operating [Abstract]
2,019	$ 1,957,954
2,020	1,404,215
2,021	560,374
2,022	429,475
2,023	35,446
Thereafter	0
Total	$ 4,387,464

Retirement Plans (Details)

Retirement Plans (Details) - USD ($)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent of employees gross pay	3.00%
Employer contribution amount	$ 488,335	$ 451,572	$ 409,247
Domestic Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution amount	3,392	3,247	3,010
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution amount	$ 44,332	$ 40,643	$ 28,195
Defined contribution plan, initial contribution
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent	100.00%
Employer matching contribution, percent of employees gross pay	3.00%
Defined contribution plan, additional contribution
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent	50.00%
Employer matching contribution, percent of employees gross pay	2.00%

Related Party Transactions (Det

Related Party Transactions (Details) - Affiliated Entity - USD ($)	Mar. 18, 2013	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Management Agreement
Related Party Transaction [Line Items]
Annual management fees	$ 300,000
Expenses from management contract		$ 225,000	$ 225,000	$ 225,000
Management agreement, term	5 years
Renewal period, term	1 year
Equity ownership percent to terminate agreement	50.00%
Expenses from Intasco Acquisition
Related Party Transaction [Line Items]
Expenses from management contract			$ 259,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Basic earnings per share calculation:
Net income	$ (191,120)	$ 626,823	$ 1,751,009	$ 1,511,889	$ 2,056,338	$ 715,106	$ 1,668,410	$ 2,046,837	$ 3,698,601	$ 6,486,691	$ 6,684,120
Net income attributable to common stockholders									$ 3,698,601	$ 6,486,691	$ 6,684,120
Weighted average shares outstanding (in shares)									9,770,011	9,750,948	9,678,316
Net income per share-basic (in dollars per share)	$ (0.02)	$ 0.06	$ 0.18	$ 0.15	$ 0.21	$ 0.07	$ 0.17	$ 0.21	$ 0.38	$ 0.67	$ 0.69
Diluted earnings per share calculation:
Net income	$ (191,120)	$ 626,823	$ 1,751,009	$ 1,511,889	$ 2,056,338	$ 715,106	$ 1,668,410	$ 2,046,837	$ 3,698,601	$ 6,486,691	$ 6,684,120
Weighted average shares outstanding (in shares)									9,770,011	9,750,948	9,678,316
Effect of dilutive securities:
Stock options (in shares)									138,017	147,316	204,948
Warrants (in shares)									670	1,154	13,019
Diluted weighted average shares outstanding (in shares)									9,908,698	9,899,418	9,896,283
Net income per share-diluted (in dollars per share)	$ (0.02)	$ 0.06	$ 0.18	$ 0.15	$ 0.21	$ 0.07	$ 0.17	$ 0.21	$ 0.37	$ 0.66	$ 0.68
The 2013 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)											210,000
The 2013 Plan and The 2014 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)											12,200
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of securities considered in the computation of earnings per share (in shares)									311,480	345,280	15,000
Employee Stock Option | The 2013 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of securities considered in the computation of earnings per share (in shares)											392,680
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of securities considered in the computation of earnings per share (in shares)									1,185	1,185
Warrant | The 2013 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of securities considered in the computation of earnings per share (in shares)											2,286
Warrants for Underwriters
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of securities considered in the computation of earnings per share (in shares)									220,000	225,000	141,000
Amount of antidilutive securities excluded from computation of earnings per share (in shares)									141,000	141,000
April 2016 | The 2013 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)									7,200	7,200
April 2016 | 2014 Omnibus Performance Award Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)									5,000	5,000
September 2017 | The 2013 Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)									5,000	5,000
September 2017 | 2014 Omnibus Performance Award Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of earnings per share (in shares)									15,000	15,000

Selected Quarterly Financial _3

Selected Quarterly Financial Data (unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 39,811,250	$ 42,051,968	$ 45,742,370	$ 47,304,153	$ 41,681,481	$ 41,231,366	$ 44,518,039	$ 47,857,096	$ 174,909,741	$ 175,287,982	$ 170,462,953
Gross profit	8,542,057	8,523,511	11,189,022	11,080,147	9,305,356	8,974,926	10,666,091	11,107,161	39,334,737	40,053,534	39,544,467
Operating income	1,332,793	1,121,781	3,272,399	2,670,898	1,994,325	1,706,114	3,070,774	3,515,457	8,397,871	10,286,670	11,984,960
Net income	$ (191,120)	$ 626,823	$ 1,751,009	$ 1,511,889	$ 2,056,338	$ 715,106	$ 1,668,410	$ 2,046,837	$ 3,698,601	$ 6,486,691	$ 6,684,120
Net income per share
Basic (in dollars per share)	$ (0.02)	$ 0.06	$ 0.18	$ 0.15	$ 0.21	$ 0.07	$ 0.17	$ 0.21	$ 0.38	$ 0.67	$ 0.69
Diluted (in dollars per share)	$ (0.02)	$ 0.06	$ 0.18	$ 0.15	$ 0.21	$ 0.07	$ 0.17	$ 0.21	$ 0.37	$ 0.66	$ 0.68

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 12, 2019	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017	Mar. 07, 2019
Subsequent Event [Line Items]
Dividends declared (in dollars per share)		$ 0.6	$ 0.60	$ 0.6
Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.05
Dividends paid					$ 0.5