Stockholders' Equity Earnings Per Share (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Weighted average number of shares outstanding - basic	51,880,534	51,899,282
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	1,285,139	1,578,071
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	2,411,194	475,893
Weighted Average Number of Shares Outstanding, Diluted	55,576,867	53,953,246