QUARTERLY DATA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Mar. 31, 2018		Dec. 23, 2017		Sep. 23, 2017		Jun. 24, 2017		Mar. 25, 2017		Dec. 24, 2016		Sep. 24, 2016		Jun. 25, 2016		Mar. 31, 2018		Mar. 25, 2017
Quarterly Financial Information Disclosure [Abstract]
Total Revenues	$ 42,452		$ 40,483		$ 35,927		$ 36,279		$ 38,453		$ 37,813		$ 34,485		$ 33,147		$ 155,141	[1]	$ 143,898	[1]
Gross Profit	10,895		9,701		8,154		8,691		9,782		8,915		8,027		8,246		37,441		34,970
Net Income	$ 2,454		$ 1,831		$ 781		$ 856		$ 1,429		$ 1,271		$ 916		$ 906		$ 5,922		$ 4,522
Basic Earnings Per Share (in Dollars per share)	$ 0.34	[2]	$ 0.26	[2]	$ 0.11	[2]	$ 0.12	[2]	$ 0.20	[2]	$ 0.18	[2]	$ 0.13	[2]	$ 0.13	[2]	$ 0.83		$ 0.65
Diluted Earnings Per Share (in Dollars per share)	$ 0.33	[2]	$ 0.25	[2]	$ 0.11	[2]	$ 0.12	[2]	$ 0.20	[2]	$ 0.18	[2]	$ 0.13	[2]	$ 0.13	[2]	$ 0.81		$ 0.64

[1] Revenues are attributed to the countries based on the destination of a product shipment or the location where service is rendered.

[2] Earnings per share calculations for each quarter include the weighted average effect of stock issuances and common stock equivalents for the quarter; therefore the sum of quarterly earnings per share amounts may not equal full-year earnings per share amounts, which reflect the weighted average effect on an annual basis. Diluted earnings per share calculations for each quarter include the effect of stock options and non-vested restricted stock units, when dilutive to the quarter. In addition, basic earnings per share and diluted earnings per share may not add due to rounding.