Notes Payable (Tables)

12 Months Ended

Dec. 31, 2016

Notes Payable [Abstract]

Schedule of notes payable

Notes payable consist of the following:

	December 31,
	2016		2015
Note payable to a Bank, maturing June 2021; with monthly payments of approximately $25,000 of principal and interest fixed at 3.99%; collateralized by principally all assets of the Company.	$	1,328,549	$	1,575,951
Note payable to a Bank, maturing July 2031; with monthly payments of approximately $11,000 of principal and interest fixed at 5.29%; collateralized by principally all assets of Smith-Columbia Corporation and guaranteed by Smith-Midland Corporation.	1,293,542		—
Note payable to a Bank, maturing April 2021; with monthly payments of approximately $6,200 of principal and interest at prime at variable rate (5.29% at December 31, 2016); collateralized by certain property of the Company.	287,773		344,717
Installment notes, collateralized by certain machinery and equipment maturing at various dates, primarily through 2021, with weighted average interest at 4.2%.	1,023,170		239,702
A revolving line-of-credit evidenced by a note payable to a Bank, with the maximum amount of $2,000,000, maturing September 12, 2017, with interest only payments and an initial rate of 4.49% adjustable monthly (3.99% at December 31, 2016). The line-of-credit is collateralized by a first lien position on the Company's accounts receivable and inventory and a second lien position on all other business assets.	—		352,022
	3,933,034		2,512,392
Less current maturities	587,523		435,717
	$	3,345,511	$	2,076,675

Schedule of maturities of notes payable and capital leases

The aggregate amounts of notes payable maturing in each of the next five years and thereafter are as follows:

Year Ending December 31,
2017	$	587,523
2018	603,299
2019	584,703
2020	604,010
2021	437,460
Thereafter	1,116,039
	$	3,933,034