Investments In Securities Held To Maturity (Tables)

3 Months Ended

Mar. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Held-to-maturity Securities [Table Text Block]

The following is a summary of held to maturity securities at March 31, 2017:

		March 31, 2017
	Contractual Maturity (in months)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market  Value
Mutual funds		$	-	$	-	$	-		$	-
Corporate fixed income  securities	Less than 12 months		1,315		-		(1	)		1,314
Commercial paper	Less than 12 months		1,646		1		-			1,647
Total investments		$	2,961	$	1	$	(1	)	$	2,961