Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Instruments [Abstract]

Schedule of Debt

Debt consists of the following (in thousands):

	June 30, 2014		December 31, 2013
Convertible senior notes - unsecured (net of discount of $7,484)	$	192,516	$	—
Revolving credit facility - unsecured	116,000		167,000
Bank term loans - unsecured	250,000		370,000
Fannie Mae term loans - secured (including a premium of $1,705)	79,503		80,080
	$	638,019	$	617,080

Schedule of Interest Expense

The following table summarizes interest expense (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2014		2013		2014		2013
Interest expense at contractual rates	$	6,065	$	1,193	$	10,438	$	2,235
Amortization of debt issuance costs and bond discount	764		404		1,132		133
Debt issuance costs expensed due to credit facility modifications	—		—		2,145		353
Total interest expense	$	6,829	$	1,597	$	13,715	$	2,721

Schedule of Interest Rate Derivatives

June 30, 2014 (dollars in thousands):

Date Entered	Maturity Date	Fixed Rate	Rate Index	Notional Amount		Fair Value
May 2012	April 2019	3.29%	1-month LIBOR	$	40,000	$	(39	)
June 2013	June 2020	3.86%	1-month LIBOR	$	80,000	$	(1,333	)
March 2014	June 2020	3.91%	1-month LIBOR	$	130,000	$	(2,508	)