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
	March 31, 2016	March 31, 2015
Weighted average number of shares outstanding:
Common stock	20,702,103	20,645,846
Common stock equivalents-stock options, grants	71,364	60,737
Diluted shares outstanding	20,773,467	20,706,583