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Note 16 - Quarterly Results (Unaudited) (Tables) | 12 Months Ended
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Mar. 31, 2018
Notes Tables |
Quarterly Financial Information [Table Text Block] |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
201 8 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |
Revenues |  | $ | 22,673 |  |  | $ | 22,954 |  |  | $ | 23,671 |  |  | $ | 26,881 |
Gross profit |  |  | 12,671 |  |  |  | 13,233 |  |  |  | 12,681 |  |  |  | 16,034 |
Net income (loss) |  |  | 1,517 |  |  |  | 2,353 |  |  |  | (11,086 | ) |  |  | 4,254 |
Net income (loss) per share – basic |  | $ | 0.41 |  |  | $ | 0.63 |  |  | $ | (2.93 | ) |  | $ | 1.12 |
Net income (loss) per share – diluted |  |  | 0.39 |  |  |  | 0.60 |  |  |  | (2.93 | ) |  |  | 1.08 |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
201 7 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |
Revenues |  | $ | 21,114 |  |  | $ | 24,409 |  |  | $ | 23,843 |  |  | $ | 24,299 |
Gross profit |  |  | 12,014 |  |  |  | 13,724 |  |  |  | 13,537 |  |  |  | 13,964 |
Net income |  |  | 1,930 |  |  |  | 2,358 |  |  |  | 3,252 |  |  |  | 3,643 |
Net income per share – basic |  | $ | 0.53 |  |  | $ | 0.64 |  |  | $ | 0.88 |  |  | $ | 0.98 |
Net income per share – diluted |  |  | 0.51 |  |  |  | 0.62 |  |  |  | 0.84 |  |  |  | 0.94 |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
201 6 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |
Revenues |  | $ | 18,158 |  |  | $ | 21,776 |  |  | $ | 19,913 |  |  | $ | 24,812 |
Gross profit |  |  | 11,141 |  |  |  | 13,067 |  |  |  | 12,209 |  |  |  | 14,996 |
Net income |  |  | 2,755 |  |  |  | 1,826 |  |  |  | 2,597 |  |  |  | 3,991 |
Net income per share – basic |  | $ | 0.77 |  |  | $ | 0.51 |  |  | $ | 0.72 |  |  | $ | 1.10 |
Net income per share – diluted |  |  | 0.74 |  |  |  | 0.48 |  |  |  | 0.69 |  |  |  | 1.06 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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