LONG-TERM OBLIGATIONS (Detail Textuals) € in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 20, 2018 USD ($)	Nov. 30, 2017 EUR (€)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 04, 2019 USD ($)	Jan. 01, 2019 USD ($)	Dec. 19, 2018 USD ($)
First Tennessee Bank National Association | Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility	$ 50,000
Description of reference rate basis	LIBOR rate
Variable interest rate in addition to reference rate	1.50%
Interest expense on credit facility			$ 512	$ 492
Outstanding borrowings credit facility			$ 15,000	10,000
Interest rate			3.52%
Description of variable rate plus applicable margin	either 1.00% or 1.25% depending on the Company's Leverage Ratio
Debt instrument description of non-default rate of interest	equal to the LIBOR Market Index Rate plus 1.00% or 1.25% per annum
Minimum tangible net worth required for compliance	$ 160,000						$ 130,000
Tangible net worth			$ 216,000
First Tennessee Bank National Association | Revolving Credit Facility | Subsequent event
Line of Credit Facility [Line Items]
Outstanding borrowings credit facility					$ 20,000	$ 5,000
First Tennessee Bank National Association | Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage			0.15%
First Tennessee Bank National Association | Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage			0.35%
Jige International S.A. | Banque Europeenne du Credit Mutuel
Line of Credit Facility [Line Items]
Outstanding borrowings credit facility			$ 760	606
Unsecured fixed rate loan | €		€ 1,000
Maturity date		Sep. 30, 2020
Interest rate per annum		0.30%
Long-term debt			475	212
Long-term obligations			$ 285	$ 394