Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments

Schedule of income effects of cash flow hedging relationships

		Amount of Loss (Gain) Recognized on
		Derivatives in the Statements of Income
Derivatives in Cash Flow Hedging	Location of Loss (Gain) Recognized on	Years Ended December 31,
Relationships	Derivatives in the Statements of Income	2015		2014		2013
		(in thousands)
Interest rate contracts	Interest expense	$	—	$	(499)	$	1,485
Total		$	—	$	(499)	$	1,485

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	2015		2014		2013		(Effective Portion)	2015		2014		2013
	(in thousands)							(in thousands)
Interest rate contracts*	$	—	$	—	$	1,690	Interest expense	$	—	$	(499)	$	1,485
Total	$	—	$	—	$	1,690	Total	$	—	$	(499)	$	1,485

* These amounts are shown net of $1.9 million of interest payments reclassified to the income statement during the year ended December 31, 2013.  No interest payments were reclassified to the income statement in 2015 and 2014.