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Condensed Consolidated Statements of Operations and Retained Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012
Income Statement [Abstract] |  |  |  |
Net sales | $ 23,385 | $ 25,633 | $ 76,131 | $ 74,068
Cost of products sold | 17,295 | 18,505 | 51,737 | 52,791
Gross profit | 6,090 | 7,128 | 24,394 | 21,277
Other expenses and income: |  |  |  |
Selling, general and administrative | 4,047 | 3,131 | 12,786 | 11,538
Selling, general and administrative - amortization | 55 | 57 | 168 | 170
Interest income | (10) | (13) | (31) | (38)
Interest expense | (11) | 19 | (2) | (271)
Total other expenses and income | 4,081 | 3,194 | 12,921 | 11,399
Income before provision for income taxes | 2,009 | 3,934 | 11,473 | 9,878
Provision for income taxes | 578 | 887 | 3,645 | 2,826
Net income | 1,431 | 3,047 | 7,828 | 7,052
Retained earnings at beginning of period | 90,426 | 77,989 | 84,632 | 74,383
Dividends | (302) | (200) | (905) | (599)
Retained earnings at end of period | $ 91,555 | $ 80,836 | $ 91,555 | $ 80,836
Basic: |  |  |  |
Net income | $ 0.14 | $ 0.30 | $ 0.78 | $ 0.70
Diluted: |  |  |  |
Net income | $ 0.14 | $ 0.30 | $ 0.78 | $ 0.70
Weighted average common shares outstanding: |  |  |  |
Basic: | 10,070 | 10,034 | 10,063 | 10,023
Diluted: | 10,107 | 10,057 | 10,099 | 10,046
Dividends declared per share | $ 0.03 | $ 0.02 | $ 0.09 | $ 0.06

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