Debt Obligations (Tables)

6 Months Ended

Jun. 30, 2016

DEBT OBLIGATIONS [Abstract]

Schedule of Debt [Table Text Block]

Debt obligations consist of the following:

	As of
(in thousands)	June 30, 2016			December 31, 2015
Credit Facility:
Term loan, due 2019	$	63,750		$	67,031
Revolving credit agreements, due 2019	198,957			7,701
	262,707			74,732
Convertible Debt:
1.50% convertible notes, unsecured, due 2044	353,018			347,878
Other obligations	10,490			5,731
Total debt obligations	626,215			428,341
Unamortized debt issuance costs	(9,585		)	(10,809		)
Carrying value of debt	616,630			417,532
Short-term debt obligations and current maturities of long-term debt obligations	(17,744		)	(12,060		)
Long-term debt obligations	$	598,886		$	405,472