Marketable Securities (Tables)

9 Months Ended

Dec. 31, 2017

Schedule Of Available For Sale Securities Reconciliation

The following is a summary of available-for-sale securities at March 31, 2017 (in thousands):



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Marketable securities	$	7,475	$	248	$	37	$	7,686

The following is a summary of available-for-sale securities at December 31, 2017 (in thousands):



	Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses		Estimated Fair Value
Marketable securities	$	6,932	$	644	17	$	18	$	7,558

Schedule of Unrealized Loss on Investments

The aggregate fair value of investments and unrealized losses on available-for-sale securities in an unrealized loss position at December 31, 2017 are as follows (in thousands):



	Aggregate Fair Value		Unrealized Losses
Securities in a continuous loss position for less than 12 months	$	459	$	2
Securities in a continuous loss position for more than 12 months	1,308		16
	$	1,767	$	18