Convertible Senior Notes (Tables)

12 Months Ended

Dec. 31, 2014

Convertible Senior Notes

Summary of amortization schedule of transactions costs

($ in thousands)	December 31, 2014
Deferred financing costs at issuance	$	12,747
Less: Accumulated amortization	(411		)
Deferred financing costs, Balance at December 31, 2014	$	12,336