Diluted net income per share attributable to common stockholders is based upon the weighted-average number of shares of common stock outstanding and the weighted-average number of shares outstanding assuming the issuance of common stock upon exercise of warrants to purchase common stock, and the vesting of restricted stock grants per ASC 260, “Earnings Per Share.”



	Three Months Ended September 30,		Nine Months Ended September 30,
	2016	2015	2016	2015
Weighted average number of shares outstanding:
Common stock	20,732,767	20,669,348	20,719,900	20,658,750
Common stock equivalents-stock options, grants	128,334	79,544	125,940	70,969
Diluted shares outstanding	20,861,101	20,748,892	20,845,840	20,729,719