Note (4) - Earnings Per Share: The Company computes earnings per share using the two-class method. The two-class method of computing earnings per share is an earnings allocation formula that determines earnings per share for common stock and any participating securities according to dividends declared (whether paid or unpaid) and participation rights in undistributed earnings. Shares of the Company’s common stock subject to unvested restricted stock awards and restricted stock units are considered participating securities because they contain a non-forfeitable right to cash dividends or dividend equivalents paid prior to vesting or forfeiture, if any, irrespective of whether the awards ultimately vest. Basic and diluted earnings per share for the six and three months ended December 31, 2018 and 2017 are computed as follows (in thousands, except per share data):

At December 31, 2018 and 2017, other than 896,777 shares and 873,636 shares, respectively, of unvested common stock subject to restricted stock awards or restricted stock units, there were no potentially dilutive securities outstanding.