Noncontrolling Interests In Operating Partnership - Additional Information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares
Noncontrolling Interest [Line Items]
Period used as a denomination to determine the average closing price of common stock	10 days
Basis of exchange, operating partnership units for common stock	one-for-one basis
Ten day average closing stock price (in dollars per share) | $ / shares	$ 86.77
Operating Partnership
Noncontrolling Interest [Line Items]
Ownership interest held by entity (as a percent)	90.90%
Voting interests of third-party owners	9.10%
OP units outstanding (in units) | shares	5,664,370
Consideration to be paid on redemption of common OP units | $	$ 491,497