FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2018

Available-for-sale Securities [Table Text Block]

Available-for-sale investments included in cash equivalents at the end of each period were as follows (in thousands):



	March 31, 2018							December 31, 2017
	Adjusted Cost		Gross Unrealized Losses			Fair Value		Adjusted Cost		Gross Unrealized Losses			Fair Value
Municipal bonds and notes	$	5,155	$	(1	)	$	5,154	$	13,320	$	(1	)	$	13,319
Corporate debt securities	54,075		(36		)	54,039		49,432		(24		)	49,408
Financial institution instruments	15,653		—			15,653		10,881		—			10,881
Total available-for-sale investments	$	74,883	$	(37	)	$	74,846	$	73,633	$	(25	)	$	73,608

- 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