MARKETABLE SECURITIES AND ACCRUED INTEREST (Tables)

12 Months Ended

Dec. 31, 2017

Marketable Securities and Accrued Interest [Abstract]

Available-for-sale Securities [Table Text Block]

The following is a summary of available-for-sale marketable securities:

	December 31, 2016
	Amortized		Unrealized		Unrealized		Fair
	cost		gains		losses		Value

Corporate bonds:
Maturing within one year	$	6,479	$	4	$	(5)	$	6,478
Maturing between one to three years		29,602		32		(94)		29,540
Accrued interest		300		-		-		300

	$	36,381	$	36	$	(99)	$	36,318

	December 31, 2017
	Amortized		Unrealized		Unrealized		Fair
	cost		gains		losses		Value

Corporate bonds:
Maturing within one year	$	6,883	$	-	$	(9)	$	6,874
Maturing between one to two years		20,510		10		(45)		20,475
Accrued interest		213		-		-		213

	$	27,606	$	10	$	(54)	$	27,562

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details