Derivatives and hedging (Tables)

6 Months Ended

Jun. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of fair values of derivative assets and liabilities in condensed consolidated balance sheets

The following table presents the fair values of derivative assets and liabilities in the condensed consolidated balance sheets (in thousands):

	June 30, 2020
	Derivative Assets				Derivative Liabilities
	Notional Amount		Fair Value		Notional Amount		Fair Value
Interest rate swaps	$	—	$	—	$	400,000	$	663
Total derivatives, gross			—				663
Less: Legally enforceable master netting agreements			—				—
Total derivatives, net			$	—			$	663

	December 31, 2019
	Derivative Assets				Derivative Liabilities
	Notional Amount		Fair Value		Notional Amount		Fair Value
Interest rate swaps	$	525,000	$	258	$	—	$	—
Total derivatives, gross			258				—
Less: Legally enforceable master netting agreements			—				—
Total derivatives, net			$	258			$	—

Schedule of effect of derivative instruments on the condensed consolidated statements of operations

The following table presents the effect of derivative instruments on the condensed consolidated statements of operations (in thousands):

	Three months ended				Six months ended
	June 30,				June 30,
	2020		2019		2020		2019
Derivatives not designated as hedges
Interest rate swaps
Loss on derivatives not designated as hedges included in interest expense	(174	)	(2,932	)	(921	)	(5,024	)