Consolidated Balance Sheets (Parenthetical)	Dec. 31, 2017 $ / shares shares
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share) | $ / shares	$ 0.01
Common stock shares authorized (in shares)	62,500,000
Common stock shares issued (in shares)	27,973,281
Common stock shares outstanding (in shares)	27,973,281