Consolidated Balance Sheet (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	450,000,000	300,000,000
Common stock, shares issued (in shares)	237,201,064	139,583,990
Common stock, shares outstanding (in shares)	236,344,172	139,076,064
Treasury stock, shares (in shares)	856,892	507,926