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Consolidated Statements of Comprehensive Income and Stockholders' Equity (USD $)
In Thousands, unless otherwise specified
Total
Common Stock
Additional Paid-in Capital
Treasury Stock
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning balance at Apr. 30, 2009 $ 26,953 $ 6,550 $ 614 $ (492) $ 25,802 $ (5,521)
Comprehensive Income:            
Net earnings 3,572       3,572  
Foreign currency translation adjustments 307         307
Change in unrecognized actuarial loss on pension obligations, net of tax 347         347
Change in fair value of cash flow hedge, net of tax (31)         (31)
Total comprehensive income (loss) 4,195          
Cash dividends declared, $.38 , $.40 and $.40 per share in the year ended 30 April 2010, 2011 and 2012 respectively (976)       (976)  
Stock options exercised, 37,500, 13,850 and 14,500 shares in the year ended 30 April 2010, 2011 and 2012 respectively 437   121 316    
Stock options granted, 47,200, 136,400 and 55,000 shares in the year ended 30 April 2010, 2011 and 2012 respectively 120   120      
Purchase of treasury stock, 20,959, 8,323 and 13,306 shares in the year ended 30 April 2010, 2011 and 2012 respectively (296)     (296)    
Ending balance at Apr. 30, 2010 30,433 6,550 855 (472) 28,398 (4,898)
Comprehensive Income:            
Net earnings 1,850       1,850  
Foreign currency translation adjustments 21         21
Change in unrecognized actuarial loss on pension obligations, net of tax 54         54
Change in fair value of cash flow hedge, net of tax (107)         (107)
Total comprehensive income (loss) 1,818          
Cash dividends declared, $.38 , $.40 and $.40 per share in the year ended 30 April 2010, 2011 and 2012 respectively (1,030)       (1,030)  
Stock options exercised, 37,500, 13,850 and 14,500 shares in the year ended 30 April 2010, 2011 and 2012 respectively 151   11 140    
Stock options granted, 47,200, 136,400 and 55,000 shares in the year ended 30 April 2010, 2011 and 2012 respectively 225   225      
Purchase of treasury stock, 20,959, 8,323 and 13,306 shares in the year ended 30 April 2010, 2011 and 2012 respectively (106)     (106)    
Ending balance at Apr. 30, 2011 31,491 6,550 1,091 (438) 29,218 (4,930)
Comprehensive Income:            
Net earnings 1,031       1,031  
Foreign currency translation adjustments (466)         (466)
Change in unrecognized actuarial loss on pension obligations, net of tax (1,682)         (1,682)
Change in fair value of cash flow hedge, net of tax (98)         (98)
Total comprehensive income (loss) (1,215)          
Cash dividends declared, $.38 , $.40 and $.40 per share in the year ended 30 April 2010, 2011 and 2012 respectively (1,031)       (1,031)  
Stock options exercised, 37,500, 13,850 and 14,500 shares in the year ended 30 April 2010, 2011 and 2012 respectively 141   (11) 152    
Stock options granted, 47,200, 136,400 and 55,000 shares in the year ended 30 April 2010, 2011 and 2012 respectively 261   261      
Purchase of treasury stock, 20,959, 8,323 and 13,306 shares in the year ended 30 April 2010, 2011 and 2012 respectively (136)     (136)    
Ending balance at Apr. 30, 2012 $ 29,511 $ 6,550 $ 1,341 $ (422) $ 29,218 $ (7,176)