Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000		5,000,000
Preferred stock, shares issued (in shares)	0		0
Preferred stock, shares outstanding (in shares)	0		0
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	100,000,000		100,000,000
Common Stock, Shares, Issued	50,879,949	50,879,949	50,719,884	50,719,884	50,719,884	50,598,901
Common stock, shares outstanding (in shares)	50,488,010		50,583,128