Equity - Earnings Per Share (EPS) (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Common stock (in shares)	20,737,903	20,665,792	20,595,422
Common stock equivalents-stock options, grants (in shares)	46,839	71,879	37,033
Diluted shares outstanding (in shares)	20,784,742	20,737,671	20,632,455