Equity - Earnings Per Share (EPS) (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Weighted average number of shares outstanding:
Common stock (in shares)	25,912,819	20,827,993
Common stock equivalents-stock options, grants (in shares)	28,509	47,052
Diluted shares outstanding (in shares)	25,941,328	20,875,045