Equity (Tables)

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of weighted average number of shares outstanding

	Twelve Months Ended December 31,
	2018	2017	2016
Weighted average number of shares outstanding:
Common stock	25,948,189	21,677,981	20,737,903
Common stock equivalents: stock options, grants	27,715	40,409	46,839
Diluted shares outstanding	25,975,904	21,718,390	20,784,742