INTEREST EXPENSE (Tables)

6 Months Ended

Jun. 30, 2012

Interest Expense [Abstract]

Interest Expense [Table Text Block]

Interest expense comprised the following for the three and six months ended June 30, 2012 and 2011:

	For the Three Months Ended June 30,					For the Six Months Ended June 30,
	2012			2011		2012			2011
Interest on Senior Notes	$	19,981		$	23,105	$	41,173		$	45,652
Interest on Convertible Notes	4,077			4,574		8,475			8,795
Interest on capital leases and other financing arrangements	1,716			701		3,170			1,694
	25,774			28,380		52,818			56,141
Amortization of capitalized debt issuance costs	6,945			1,451		8,167			3,427
Amortization of debt issuance discount and premium	(1,590		)	4,502		1,968			9,249
(Gain) / loss on extinguishment of debt	(448		)	3,424		(448		)	24,979
	4,907			9,377		9,687			37,655
Total interest expense	$	30,681		$	37,757	$	62,505		$	93,796

Schedule of Extinguishment of Debt [Table Text Block]

(Loss) / Gain on Extinguishment

Tender offer	2013 Convertible Notes			2014 Floating Rate Notes		Total
(Loss) / gain on extinguishment	$	(3,763	)	$	4,211	$	448
Unamortized debt costs included in (loss) / gain on extinguishment	370			527		897
Adjustment to additional paid-in capital	$	868		$	—	$	868

The (gain) / loss on extinguishment of debt comprised the following for the three and six months ended June 30, 2012 and 2011 (see Note 4 "Long-Term Debt and Other Financing Arrangements"):

	For the Three Months Ended June 30,					For the Six Months Ended June 30,
	2012			2011		2012			2011
2013 Convertible Notes	$	3,763		$	3,424	$	3,763		$	22,591
2014 Floating Rate Notes	(4,211		)	—		(4,211		)	—
2016 Fixed Rate Notes	—			—		—			2,388
(Gain) / loss on extinguishment	$	(448	)	$	3,424	$	(448	)	$	24,979