Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Financial Instruments [Abstract]

Cash and Available for Sale Securities Adjusted Cost, Gross Unrealized Gains, Gross Unrealized Losses, and Fair Value by Significant Investment Category

The following tables represent cash and the available-for-sale securities adjusted cost, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or investment securities (in thousands):

	June 30, 2018
		Cost		Unrealized Losses		Accrued Interest		Estimated Fair Value		Cash & Cash Equivalents		Investment Securities
Cash	$	27,970	$	-	$	-	$	27,970	$	27,970	$	-
Level 1:
Certificate of deposit		50,000		-		-		50,000		50,000		-
Money market accounts		3,106		-		-		3,106		3,106		-
Government & agency securities		4,135		(106)		2		4,031		-		4,031
		57,241		(106)		2		57,137		53,106		4,031
Level 2:
Municipal bonds		18,110		(196)		300		18,214		-		18,214
Total	$	103,321	$	(302)	$	302	$	103,321	$	81,076	$	22,245

	December 31, 2017
		Cost		Unrealized Losses		Accrued Interest		Estimated Fair Value		Cash & Cash Equivalents		Investment Securities
Cash	$	28,630	$	-	$	-	$	28,630	$	28,630	$	-
Level 1:
Certificate of deposit		45,000		-		-		45,000		45,000		-
Money market accounts		1,447		-		-		1,447		1,447		-
Government & agency securities		5,342		(67)		13		5,288		-		5,288
		51,789		(67)		13		51,735		46,447		5,288
Level 2:
Municipal bonds		18,404		(201)		266		18,469		-		18,469
Total	$	98,823	$	(268)	$	279	$	98,834	$	75,077	$	23,757