Derivatives (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of derivative instruments

At March 31, 2018, the Company had the following derivative instruments (in thousands, other than quantity and interest rates):

Type	Quantity	Effective Dates	Maturity Dates	Hedge Interest Rates	Notional Amount		Adjusted Fair Market Value
Interest rate swaps	2	4/29/2016 - 12/30/2016	8/31/2022 - 9/30/2022	1.27%- 2.37%	$	27,256	$	715
Interest rate swaps	10	7/31/2017 - 1/31/2019	4/30/2024 - 10/31/2024	2.16%- 2.69%	$	335,740	$	6,259
Interest rate swaps	4	4/30/2015	10/31/2028	2.17%-2.18%	$	124,637	$	4,365
Interest rate swap	1	9/20/2020	6/20/2030	2.57%	$	67,013	$	551
Interest rate swap	1	9/30/2022	9/30/2031	3.23%	$	9,435	$	(156	)
Interest rate swap	1	9/20/2020	4/20/2032	2.60%	$	33,409	$	287
Interest rate swaps	5	1/31/2019 - 10/31/2024	7/31/2034	2.48% - 3.04%	$	144,379	$	1,645
Interest rate swaps	5	7/31/2017 - 4/30/2024	7/31/2035	2.56% - 2.95%	$	150,175	$	722
Interest rate swaps	5	1/31/2018 - 10/18/2024	10/31/2036	2.62% - 2.95%	$	182,267	$	690