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SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals 2) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 24, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Prepaid expenses related to unamortized product brochure costs		$ 271,000	$ 282,000
Net realized (losses) gains on marketable securities		(39,000)	45,000	$ 57,000
Reclassification of net realized (losses) gains from other comprehensive income		(39,000)	45,000	57,000
Gross unrealized gains on marketable securities		4,000	26,000
Gross unrealized losses on marketable securities		53,000	29,000
Selling, general and administrative expenses
Significant Accounting Policies [Line Items]
Advertising expenses		$ 2,545,000	$ 2,480,000	$ 2,291,000
Subsequent Event | Dividend declared
Significant Accounting Policies [Line Items]
Amount of dividend payable in cash per share	$ 0.07
Dividends payable, date declared	Jan. 24, 2017
Dividend payable, date to be payable	Mar. 10, 2017
Dividends payable, date of record	Feb. 10, 2017

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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