Derivative financial instruments (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Effects of Derivative Instruments on Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)

The following table presents the location and effects of the derivative instruments in the Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2018 and 2017($ in thousands):

		Three Months Ended June 30,					Six Months Ended June 30,
Derivatives not Designated as Hedging Instruments	Income Statement Classification	2018			2017		2018		2017
Interest rate swaps	Interest expense	$	(5,398	)	$	—	$	5,627	$	—

Schedule of Location and Fair Value of Derivative Instruments in Condensed Consolidated Balance Sheet

The following table presents the location and fair value of the derivative instruments in the Condensed Consolidated Balance Sheet as of June 30, 2018and December 31, 2017 ($ in thousands):

		As of June 30,		As of December 31,
Derivatives not Designated as Hedging Instruments	Balance Sheet Classification	2018		2017
Interest rate swaps	Derivative financial instruments	$	3,720	$	—