Debt (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Components of Debt

The Company is obligated under borrowings, as follows (in thousands):

	June 30, 2013			December 31, 2012
Revolving credit facility	$	446,000		$	258,000
Term loan facility		194,875			148,125
Propel TLT facility		132,042			117,601
Propel TLC facility		36,699			—
Senior secured notes		66,250			72,500
Convertible notes		265,000			115,000
Less: Debt discount		(41,233	)		(14,442	)
Capital lease obligations		8,026			9,252
	$	1,107,659		$	706,036

Balances of the Liability and Equity Components

The balances of the liability and equity components of all of the convertible notes outstanding were as follows (in thousands):

	June 30, 2013			December 31, 2012
Liability component—principal amount	$	265,000		$	115,000
Unamortized debt discount		(41,233	)		(14,442	)
Liability component—net carrying amount	$	223,767		$	100,558
Equity component	$	42,748		$	14,702

Interest Expense

Interest expense related to the convertible notes was as follows (in thousands):

	Three Months Ended June 30, 2013		Six Months Ended June 30, 2013
Interest expense – stated coupon rate	$	948	$	1,806
Interest expense – amortization of debt discount		710		1,317
Total interest expense – convertible notes	$	1,658	$	3,123