Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Measurements

Schedule of financial assets and liabilities measured at fair value

	Estimated Fair Value March 31, 2017
	Total		Input Levels Used
	Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	78,555	$	78,555	$	-	$	-
Available for sale securities		189,289		2,412		186,877		-
Foreign currency forward contracts		(71)		-		(71)		-
Commodity futures contracts		26		26		-		-
Trading securities		73,025		73,025		-		-
Total assets measured at fair value	$	340,824	$	154,018	$	186,806	$	-
	Estimated Fair Value December 31, 2016
		Total	Input Levels Used
		Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	119,145	$	119,145	$	-	$	-
Available for sale securities		164,183		2,419		161,764		-
Foreign currency forward contracts		(119)		-		(119)		-
Commodity futures contracts, net		1,746		1,746		-		-
Trading securities		67,995		67,995		-		-
Total assets measured at fair value	$	352,950	$	191,305	$	161,645	$	-
	Estimated Fair Value March 31, 2016
		Total	Input Levels Used
		Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	95,057	$	95,057	$	-	$	-
Available for sale securities		152,724		2,441		150,283		-
Foreign currency forward contracts		(1,350)		-		(1,350)		-
Commodity futures contracts		569		569		-		-
Trading securities		62,509		62,509		-		-
Total assets measured at fair value	$	309,509	$	160,576	$	148,933	$	-