Notes Payable (Tables)

12 Months Ended

Dec. 31, 2017

Notes Payable [Abstract]

Schedule of notes payable

Notes payable consist of the following (in thousands):

	December 31,
	2017		2016
Note payable to a Bank, maturing June 2021; with monthly payments of approximately $26 of principal and interest fixed at 3.99%; collateralized by principally all assets of the Company.	$	1,071	$	1,329
Note payable to a Bank, maturing July 2031; with monthly payments of approximately $11 of principal and interest fixed at 5.29%; collateralized by principally all assets of Smith-Columbia Corporation and guaranteed by Smith-Midland Corporation.	1,234		1,293
Note payable to a Bank, maturing April 2021; with monthly payments of approximately $6.2 of principal and interest at prime at variable rate (5.29% at December 31, 2017); collateralized by certain property of the Company.	227		288
Installment notes, collateralized by certain machinery and equipment maturing at various dates, primarily through 2021; with monthly payments varying from $0.3 to $4.1 with weighted average interest at 4.2%.	1,001		1,023
A revolving line-of-credit evidenced by a note payable to a Bank, with the maximum amount of $2,000,000, maturing September 12, 2018, with interest only payments and an initial rate of 4.49% adjustable monthly (3.99% at December 31, 2017). 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.	—		—
	3,533		3,933
Less current maturities	637		587
	$	2,896	$	3,346

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 (in thousands):

Year Ending December 31,
2018	$	637
2019	620
2020	640
2021	478
2022	166
Thereafter	992
	$	3,533