Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Summary Of Financial Assets And Liabilities Accounted For At Fair Value

The table below sets forth, by level, the Company’s financial assets and liabilities that are recorded at fair value in the accompanying consolidated balance sheet: 

	Fair Value at				December 31, 2018
	Total		Level 1			Level 2		Level 3
	(In thousands)
Assets:
Investments in marketable securities	$	162,797	$	99,888		$	62,909	$	—
Derivatives	3,554		—			3,022		532
Total assets	$	166,351	$	99,888		$	65,931	$	532
Liabilities:
Derivatives	$	13,288	$	13,252		$	36	$	—

	Fair Value at				December 31, 2017
	Total		Level 1			Level 2		Level 3
	(In thousands)
Assets:
Investments in marketable securities	$	155,846	$	64,100		$	91,746	$	—
Derivatives	7,339		—			1,985		5,354
Total assets	$	163,185	$	64,100		$	93,731	$	5,354
Liabilities:
Derivatives	$	7,217	$	7,263		$	26	$	(72	)

Summary Of Change In The Fair Values Of Financial Instruments Categorized As Level 3

The following table summarizes the change in the fair values of financial instruments categorized as level 3.

	Year Ended December 31, 2018			Year Ended December 31, 2017
(In thousands)
Balance, beginning of period	$	5,426		$	4,537
Realized and unrealized (gains) losses recognized in earnings, net	(302		)	(2,305		)
Purchases	3,420			4,910
Issuances	(724		)	(535		)
Settlements	(7,288		)	(1,181		)
Ending balance	$	532		$	5,426