Investment in Available-for-Sale Securities (Tables)

3 Months Ended

Mar. 31, 2016

Available-For-Sale Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

The following is a summary of the Company’s investments in available-for-sale securities as of March 31, 2016 (unaudited):

	Cost		Unrealized Gains		Unrealized Losses		Fair Value
U.S. federal agency securities	$	4,852	$	76	$	-	$	4,928
Municipal securities		435,190		1,762		(176)		436,776
Certificates of deposit		1,149,290		24,693		(10,786)		1,163,197
Corporate debt securities		17,048		207		-		17,255
	$	1,606,380	$	26,738	$	(10,962)	$	1,622,156

The following is a summary of the Company’s investments in available-for-sale securities as of December 31, 2015:

	Cost		Unrealized Gains		Unrealized Losses		Fair Value
U.S. federal agency securities	$	4,830	$	55	$	-	$	4,885
Municipal securities		492,237		789		(980)		492,046
Certificates of deposit		1,256,649		20,182		(14,865)		1,261,966
Corporate debt securities		17,173		115		-		17,288
	$	1,770,889	$	21,141	$	(15,845)	$	1,776,185

Available-for-sale Securities [Table Text Block]

The cost and fair value of investments in fixed income available-for-sale debt securities, by contractual maturity, as of March 31, 2016 (unaudited), are as follows:

	Cost		Fair Value
Due within one year	$	991,149	$	1,011,701
Due after one year through three years		415,361		408,358
Due after three years		199,870		202,097
	$	1,606,380	$	1,622,156