Summary of Significant Accounting Policies (Basic and Diluted Earnings Per Share (in shares)) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Weighted-average shares for basic EPS (in shares)	146,703,766	146,461,283	146,562,252	146,327,788
Plus incremental shares related to convertible debt (in shares)	0	0	961,191	0
Plus incremental shares related to stock options and non-vested restricted stock (in shares)	32,374	26,290	13,782	185,660
Weighted-average shares for diluted EPS (in shares)	146,736,140	146,487,573	147,537,225	146,513,448