Cash and Cash Equivalents and Short-Term Investments (Tables)

12 Months Ended

Dec. 31, 2017

Cash and Cash Equivalents and Short-Term Investments

Schedule of short term-investments

			Estimated		Carrying
December 31, 2017	Cost		Fair Value		Value
		(inthousands)
Investments:
Short-term:
Available for sale common stock	$	275	$	238	$	238
Total available for sale		275		238		238
Total short term	$	275	$	238	$	238
December 31, 2016
Investments:
Short-term:
Available for sale common stock	$	275	$	334	$	334
Total available for sale		275		334		334
Total short term	$	275	$	334	$	334