Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

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, 2014
	Total		Level 1			Level 2		Level 3
	(In thousands)
Assets:
Investments in marketable securities	$	254,099	$	5,145		$	248,954	$	—
Derivatives	13,557		9,026			1,491		3,040
Total assets	$	267,656	$	14,171		$	250,445	$	3,040
Liabilities:
Derivatives	$	766	$	—		$	766	$	—

	Fair Value at				December 31, 2013
	Total		Level 1			Level 2			Level 3
	(In thousands)
Assets:
Investments in marketable securities	$	264,443	$	77,967		$	186,476		$	—
Derivatives	19,954		14,847			—			5,107
Total assets	$	284,397	$	92,814		$	186,476		$	5,107
Liabilities:
Derivatives	$	12	$	—		$	(149	)	$	161

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,
	2014			2013
	(In thousands)
Balance, beginning of period	$	4,946		$	8,174
Realized and unrealized losses recognized in earnings, net	(6,572		)	(10,253		)
Purchases	5,288			8,654
Issuances	(622		)	(25		)
Settlements	—			(1,604		)
Ending balance	$	3,040		$	4,946