Consolidated Balance Sheets [Parenthetical] - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		100,000,000
Common stock, shares outstanding (in shares)	48,955,909	48,833,323