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):


	March 31, 2018
		Cost		Unrealized Losses		Accrued Interest		Estimated Fair Value		Cash & Cash Equivalents		Investment Securities

Cash	$	39,005	$	-	$	-	$	39,005	$	39,005	$	-

Level 1:
Certificate of deposit		45,000		-		-		45,000		45,000		-
Money market accounts		2,958		-		-		2,958		2,958		-
Government & agency securities		4,136		(97)		17		4,056		-		4,056
		52,094		(97)		17		52,014		47,958		4,056

Level 2:
Municipal bonds		18,257		(240)		205		18,222		-		18,222

Total	$	109,356	$	(337)	$	222	$	109,241	$	86,963	$	22,278


	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