Derivatives and Hedging Activities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	May 31, 2017
Derivative [Line Items]
Loss on derivative instrument	$ 634,000	$ 0
Ineffective portion of the change in fair value derivatives	0
Interest expense	44,636,000	$ 0
Interest rate swaps
Derivative [Line Items]
Interest expense	$ 2,700,000
Subsequent Events | Interest rate swaps
Derivative [Line Items]
Fixed Rate			1.844%
Notional Amount			$ 1,200,000,000