Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of interest rate swap contracts

As of December 31, 2017, the Company had net interest rate swap agreements in place to fix the floating interest rates on a portion of the borrowings under its debt facilities summarized below:

Derivatives	Net Notional Amount	Weighted Average Fixed Leg (Pay) Interest Rate	Weighted Average Remaining Term
Interest rate swaps	$1,740.8 million	1.70%	3.3 years

Schedule of fair value of derivative instruments

The fair value of derivative instruments on its consolidated balance sheets as of December 31, 2017 and December 31, 2016 was as follows (in thousands):

	Asset Derivatives				Liability Derivatives
Derivative Instrument	December 31, 2017		December 31, 2016		December 31, 2017		December 31, 2016
Interest rate swap contracts, designated	$	3,554	$	526	$	2,503	$	8,728
Interest rate swap contracts, not designated	3,822		5,217		—		676
Total derivatives	$	7,376	$	5,743	$	2,503	$	9,404

	December 31, 2017
Unrealized gain on derivative instruments designated as cash flow hedges	$	6,115

Schedule of derivatives instruments and their effect on consolidated statements of operations and consolidated statements of comprehensive income

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