Summary of Significant Accounting Policies (Basic and Diluted Earnings Per Share (in shares)) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Weighted-average shares for basic EPS (in shares)	149,379,306	146,509,025	148,189,710	146,490,322
Plus incremental shares related to convertible debt (in shares)	1,379,454	0	0	1,449,753
Plus incremental shares related to stock options and non-vested restricted stock (in shares)	88,100	12,082	85,701	14,242
Weighted-average shares for diluted EPS (in shares)	150,846,860	146,521,107	148,275,411	147,954,317