Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments

Schedule of information about financial statement effects related to cash flow hedges

	Amount of Gain (Loss) Recognized						Location of Loss (Gain)	Amount of Loss (Gain) Reclassified
	in OCI on Derivatives						Reclassified from	from Accumulated OCI into Income
Derivatives in	(Effective Portion)						Accumulated OCI into	(Effective Portion)
Cash Flow Hedging	Years Ended December 31,						Income	Years Ended December 31,
Relationships	2017		2016		2015		(Effective Portion)	2017		2016		2015
	(in thousands)							(in thousands)
Interest rate contracts	$	896	$	69	$	—	Interest expense	$	621	$	25	$	—
Total	$	896	$	69	$	—	Total	$	621	$	25	$	—