Debt and Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Long-term Debt, Unclassified [Abstract]

Schedule of Debt and Other Long Term Liabilities



	Debt														Other Liabilities							Total
	Senior Notes						Credit Facility					Total Debt			Capital Lease Obligations			Asset retirement obligations		Other long-term liabilities
Dollars in thousands	Senior Unsecured Notes due 2019			Senior Unsecured Notes due 2021			Term Loans			Revolving Line of Credit		Total Debt			Capital Lease Obligations			Asset retirement obligations		Other long-term liabilities
As of December 31, 2014:
Principal	$	350,000		$	300,000		$	146,250		$	160,000	$	956,250
Discount	(4,296		)	(4,152		)	(335		)	—		(8,783		)
Total	345,704			295,848			145,915			$	160,000	947,467			$	15,391		$	13,576	$	17,651	$	994,085
Less: current portion	—			—			(9,390		)	—		(9,390		)	(11,026		)	—		—		(20,416		)
Total long-term portion	$	345,704		$	295,848		$	136,525		$	160,000	$	938,077		$	4,365		$	13,576	$	17,651	$	973,669

Unamortized deferred financing fees⁽¹⁾	$	649		$	1,372		$	—		$	2,965	$	4,986									$	4,986



	Debt														Other Liabilities								Total
	Senior Unsecured Notes due 2019			Credit Facility					Convertible Notes			Total Debt			Capital Lease Obligations			Asset retirement obligations		Other long-term liabilities
Dollars in thousands	Senior Unsecured Notes due 2019			Term Loans			Revolving Line of Credit		Convertible Notes			Total Debt			Capital Lease Obligations			Asset retirement obligations		Other long-term liabilities
As of December 31, 2013:
Principal	$	350,000		$	344,375		$	—	$	51,148		$	745,523
Discount	(5,317		)	—			—		(1,446		)	(6,763		)
Total	344,683			344,375			$	—	49,702			738,760			$	21,361		$	13,086	$	12,085		$	785,292
Less: current portion	—			(42,187		)	—		(49,702		)	(91,889		)	(11,997		)	—		(3		)	(103,889		)
Total long-term portion	$	344,683		$	302,188		$	—	$	—		$	646,871		$	9,364		$	13,086	$	12,082		$	681,403

Unamortized deferred financing fees⁽¹⁾	$	832		$	1,259		$	2,749	$	186		$	5,026										$	5,026

⁽¹⁾Deferred financing fees are recorded in other long-term assets in our Consolidated Balance Sheets and are amortized on a straight line basis over the life of the related loan.

Interest Income and Interest Expense Disclosure

Interest Expense



Dollars in thousands	Year Ended December 31,
Dollars in thousands	2014		2013			2012
Cash interest expense	$	41,562	$	25,289		$	12,833
Non-cash interest expense:
Amortization of debt discount	2,606		4,674			7,109
Amortization of deferred financing fees	1,510		1,720			2,126
Other	—		(550		)	(2,700		)
Total non-cash interest expense	4,116		5,844			6,535
Total cash and non-cash interest expense	45,678		31,133			19,368
Loss from early extinguishment of debt	2,018		6,013			953
Total interest expense	$	47,696	$	37,146		$	20,321

Schedule of Maturities of Long-term Debt

The Amended and Restated Credit Agreement requires principal amortization payments under the Term Loan as follows:



Dollars in thousands	Repayment Amount
2015	$	9,376
2016	13,126
2017	15,000
2018	18,750
2019	89,998
Total	$	146,250

Schedule of Other Long-term Liabilities



Dollars in thousands	December 31,
Dollars in thousands	2014		2013
Tenant improvement and deferred rent and other	$	13,013	$	9,301
Unrecognized tax benefit	4,638		2,781
Total other long-term liabilities	$	17,651	$	12,082