Stocholders' Equity (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

	Three Months Ended March 31,
	2020	2019
Computation of diluted weighted average shares outstanding:
Basic weighted average shares outstanding	53,607,104	51,880,534
Incremental shares from assumed exercise of stock options and vesting of restricted stock	1,172,217	1,285,139
Incremental shares from assumed conversion of convertible debentures	—	2,411,194
Diluted weighted average shares outstanding	54,779,321	55,576,867