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Financial Instruments - Derivatives and Hedging (Tables)
9 Months Ended
Sep. 30, 2017
Derivative [Line Items]  
Schedule of derivative instruments in Statement of Financial Position, fair value
Detail on the Company’s fair value of interest rate derivatives on a gross and net basis as of September 30, 2017 and December 31, 2016, respectively, is as follows:
 
 
Fair Value of Derivative Instruments
Interest rate swaps classified as:
 
September 30, 2017
 
December 31, 2016
Gross derivative assets
 
$
20,171

 
$
21,605

Gross derivative liabilities
 

 

Net derivative assets
 
$
20,171

 
$
21,605

Schedule of cash flow hedges included in AOCI
The effective portion of the Company's interest rate swaps that was recognized in the Company’s unaudited Condensed Consolidated Statement of Comprehensive Income for the three and nine months ended September 30, 2017 and 2016 is as follows:

Derivatives in Cash Flow Hedging Relationships (Interest Rate Swaps)
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Change in unrealized gain (loss) on interest rate swaps
 
$
132

 
$
79

 
$
(532
)
 
$
(1,704
)
Amortization of interest rate swaps to interest expense
 
(1,094
)
 
1,242

 
(902
)
 
4,117

Change in unrealized gain (loss) on interest rate swaps, net
 
$
(962
)
 
$
1,321

 
$
(1,434
)
 
$
2,413

Cash Flow Hedging [Member] | Designated as Hedging Instrument  
Derivative [Line Items]  
Schedule of interest rate derivatives
Detail of the Company’s interest rate derivatives designated as cash flow hedges outstanding as of September 30, 2017 and December 31, 2016 is as follows:
 
 
Number of Instruments
 
Notional Amount
 
 
September 30, 2017
 
December 31, 2016
 
September 30, 2017
 
December 31, 2016
Interest Rate Swaps
 
9
 
9
 
$
1,400,000

 
$
1,400,000