Stockholders' Equity - Narrative (Details) - $ / shares	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)	300,000,000	300,000,000	300,000,000
Par value of common stock (in dollars per share)	$ 0.01
Authorized capitalization of preferred stock (in shares)	3,500,000	3,500,000	3,500,000
Par value of preferred stock per share (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Preferred shares issued (in shares)	0
Maximum
Class Of Stock [Line Items]
Number of shares authorized to be repurchased (in shares)	2,400,000