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Fair Value of Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2016
Fair Value Disclosures [Abstract]  
Changes in Fair Value of Derivatives
 
 
Three Months Ended March 31,
(In thousands)
 
2016
 
2015
Change in fair value:
 
 
 
 
Recognized in earnings
 
$
(7
)
 
$
(6
)
Recognized in other comprehensive income
 
(688
)
 
(427
)
 
 
$
(695
)
 
$
(433
)