Non-operating (loss) income (Tables)

6 Months Ended

Jun. 30, 2016

Non-operating (loss) income, net [Abstract]

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

The following table presents the components of Non-operating income (loss), net:

	Three Months Ended June 30,					Six Months Ended June 30,
	2016			2015		2016		2015
	(In thousands)
Unrealized (loss) gain on contingent interest derivative on Subordinated Convertible Debentures	$	(94	)	$	2,708	$	971	$	(4,311	)
Interest income	1,522			373		2,564		632
Other, net	281			120		1,295		1,325
Total non-operating income (loss), net	$	1,709		$	3,201	$	4,830	$	(2,354	)