Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Summary of balance sheet fair values

All financial instruments of the Company are reflected in the accompanying Consolidated Balance Sheets at amounts which, in management's estimation, reasonably approximate their fair values, except for the following:

	June 30, 2019				December 31, 2018
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial liabilities:
Notes payable	$	2,994,495		3,175,311	$	3,006,478		2,961,769
Unsecured credit facilities	$	683,970		685,705	$	708,734		710,902

Summary of assets measured on recurring basis

The following tables present the placement in the fair value hierarchy of assets and liabilities that are measured at fair value on a recurring basis:

	Fair Value Measurements as of June 30, 2019
				Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Significant Unobservable Inputs
(in thousands)	Balance			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities	$	37,093			37,093		—			—
Available-for-sale debt securities		8,151			—		8,151			—
Interest rate derivatives		4,367			—		4,367			—
Total	$	49,611			37,093		12,518			—
Liabilities:
Interest rate derivatives	$	(1,619	)		—		(1,619	)		—

	Fair Value Measurements as of December 31, 2018
				Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs			Significant Unobservable Inputs
(in thousands)	Balance			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities	$	33,354			33,354		—			—
Available-for-sale debt securities		7,933			—		7,933			—
Interest rate derivatives		17,482			—		17,482			—
Total	$	58,769			33,354		25,415			—
Liabilities:
Interest rate derivatives	$	(5,491	)		—		(5,491	)		—

Summary of assets measured on non-recurring basis

The following tables present the placement in the fair value hierarchy of assets and liabilities that are measured at fair value on a non-recurring basis:

	Fair Value Measurements as of June 30, 2019
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs		Total Gains
(in thousands)	Balance		(Level 1)		(Level 2)		(Level 3)		(Losses)
Operating properties	$	41,976		—		41,976		—	$	(10,447	)

	Fair Value Measurements as of December 31, 2018
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs		Total Gains
(in thousands)	Balance		(Level 1)		(Level 2)		(Level 3)		(Losses)
Operating properties	$	42,760		—		42,760		—	$	(6,579	)