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5. PER SHARE INFORMATION (Details) - Reconciliation of Diluted Shares - shares
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Reconciliation of Diluted Shares [Abstract]        
Weighted average shares outstanding 7,530,579 7,561,850 7,556,873 7,560,603
Dilutive restricted share units   11,719   9,370
Dilutive stock options   5,144   2,494
Dilutive weighted average shares outstanding 7,530,579 7,578,713 7,556,873 7,572,467