Derivative Instruments

Our objectives in using derivatives are to add stability to interest expense and to manage our cash flow volatility and exposure to interest rate movements. To accomplish this objective, we primarily use derivative instruments as part of our interest rate risk management strategy. Derivative instruments designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

During December 2018, in anticipation of issuing long-term debt in the future, we entered into two treasury locks with an aggregate notional value of $100,000 to manage our exposure to changes in the ten year U.S. Treasury rate (the "2018 Treasury Locks"). The 2018 Treasury Locks fix the ten year U.S. Treasury rate at a weighted average of 2.93% and cash settle on or before April 30, 2019. We designated the 2018 Treasury Locks as cash flow hedges.

In connection with the originations of the Unsecured Term Loans (see Note 4), we entered into interest rate swaps to manage our exposure to changes in the one month LIBOR rate. The four interest rate swaps, which fix the variable rate of the 2014 Unsecured Term Loan, have an aggregate notional value of $200,000, mature on January 29, 2021 and fix the LIBOR rate at a weighted average rate of 2.29% (the "2014 Swaps"). The six interest rate swaps, which fix the variable rate of the 2015 Unsecured Term Loan, have an aggregate notional value of $260,000, mature on September 12, 2022 and fix the LIBOR rate at a weighted average rate of 1.79% (the "2015 Swaps"). We designated the 2014 Swaps and 2015 Swaps as cash flow hedges.

In September 2017, we entered into two treasury locks (the "2017 Treasury Locks"), with an aggregate notional value of $100,000, in order to fix the interest rate on an anticipated unsecured debt offering. The Treasury Locks fixed the ten year U.S. Treasury rate at a weighted average rate of approximately 2.18%. Since we did not designate the 2017 Treasury Locks as hedges the change in the fair value of the 2017 Treasury Locks was recorded within the consolidated statement of operations. During the year ended December 31, 2017 we settled the 2017 Treasury Locks and recognized $1,896 in the line item Settlement Gain on Derivative Instruments.

Our agreements with our derivative counterparties contain provisions where if we default on any of our indebtedness, then we could also be declared in default on our derivative obligations subject to certain thresholds. As of December 31, 2018, we had not posted any collateral related to these agreements and were not in breach of any of the provisions of these agreements. If we had breached these agreements, we could have been required to settle our obligations under the agreements at their termination value.

The following table sets forth our financial assets and liabilities related to the 2014 Swaps, the 2015 Swaps and the 2018 Treasury Locks, which are included in the line items Prepaid Expenses and Other Assets, Net or Accounts Payable, Accrued Expenses and Other Liabilities and are accounted for at fair value on a recurring basis as of December 31, 2018:



				Fair Value Measurements at Reporting Date Using:
Description	Fair Value			Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)			Unobservable Inputs (Level 3)
Derivatives designated as a hedging instrument:
Assets:
2014 Swaps	$	751		—	$	751		—
2015 Swaps	$	5,893		—	$	5,893		—

Liabilities:
2018 Treasury Locks	$	(2,162	)	—	$	(2,162	)	—

There was no ineffectiveness recorded on the 2014 Swaps, the 2015 Swaps and the 2018 Treasury Locks during the year ended December 31, 2018.

The estimated fair value of the 2014 Swaps, the 2015 Swaps and the 2018 Treasury Locks was determined using the market standard methodology of netting the discounted fixed cash payments and the discounted expected variable cash receipts. The variable cash receipts are based on an expectation of interest rates (forward curves) derived from observable market interest rate curves. In addition, credit valuation adjustments are incorporated in the fair value to account for potential non-performance risk, including our own non-performance risk and the respective counterparty's non-performance risk. We determined that the significant inputs used to value the 2014 Swaps, the 2015 Swaps and the 2018 Treasury Locks fell within Level 2 of the fair value hierarchy.