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Note 2 - Acquisitions and Dispositions - Purchase Price Allocation (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Aug. 06, 2015 | Jul. 06, 2015 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Cash consideration |  |  | $ 15,518 | $ 6,800 | $ 24,111
Goodwill |  |  | $ 65,543 | $ 72,156 | $ 66,137
Infitrak Acquisition [Member] |  |  |  |  |
Cash consideration |  | $ 8,747 |  |  |
Holdback payment liability |  | 637 |  |  |
Contingent consideration liability |  | 9,271 |  |  |
Aggregate consideration |  | 18,655 |  |  |
Accounts receivable |  | 925 |  |  |
Inventories |  | 310 |  |  |
Property, plant and equipment |  | 530 |  |  |
Intangibles |  | 5,869 |  |  |
Goodwill |  | 13,833 |  |  |
Accounts payable |  | (470) |  |  |
Accrued liabilities |  | (767) |  |  |
Deferred income taxes |  | (1,575) |  |  |
Total purchase price allocation |  | $ 18,655 |  |  |
North Bay Acquisition [Member] |  |  |  |  |
Cash consideration | $ 10,322 |  |  |  |
Holdback payment liability | 1,000 |  |  |  |
Aggregate consideration | 11,322 |  |  |  |
Accounts receivable | 285 |  |  |  |
Inventories | 85 |  |  |  |
Property, plant and equipment | 229 |  |  |  |
Intangibles | 4,454 |  |  |  |
Goodwill | 7,962 |  |  |  |
Accrued liabilities | (100) |  |  |  |
Total purchase price allocation | 11,322 |  |  |  |
Cash | 20 |  |  |  |
Unearned revenues | $ (1,613) |  |  |  |

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- Definition Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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