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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Income Statement [Abstract]        
Revenue $ 68,578 $ 65,936 $ 212,067 $ 211,461
Cost of sales 16,415 16,776 53,485 55,364
Gross Profit 52,163 49,160 158,582 156,097
Selling, general, and administrative 43,210 41,185 138,337 132,947
Income from operations 8,953 7,975 20,245 23,150
Other income (expense)        
Interest and dividend income, net 60 154 240 450
Other income (expense) (2) (20) (23) 129
Nonoperating Income (Expense) 58 134 217 579
Income from continuing operations before income taxes 9,011 8,109 20,462 23,729
Provision for income taxes 2,946 2,707 6,740 8,064
Income from continuing operations 6,065 5,402 13,722 15,665
Income from discontinued operations, net of tax   104   533
Net income $ 6,065 $ 5,506 $ 13,722 $ 16,198
Basic earnings per share        
Earnings per share from continuing operations $ 0.51 $ 0.45 $ 1.16 $ 1.30
Earnings per share from discontinued operations   0.01   0.05
Earnings per share 0.51 0.46 1.16 1.35
Diluted earnings per share        
Earnings per share from continuing operations 0.51 0.45 1.15 1.29
Earnings per share from discontinued operations   0.01   0.05
Earnings per share $ 0.51 $ 0.46 $ 1.15 $ 1.34
Weighted average shares outstanding -        
Basic 11,848 11,923 11,839 12,028
Diluted 11,948 12,020 11,925 12,122
Cash dividends declared per share $ 0.25   $ 0.75