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Basis of Presentation, Business Description and Summary of Significant Accounting Policies (Details Textual) $ in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 41 Months Ended |
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Mar. 31, 2016 | Mar. 31, 2014 Observation | Feb. 04, 2014 Observation | Feb. 13, 2012 Observation | Feb. 10, 2012 Observation | Apr. 21, 2014 | Feb. 25, 2014 | Sep. 24, 2012 Observation | Mar. 05, 2012 | May 31, 2016 USD ($) Investment | Feb. 28, 2014 | May 31, 2016 USD ($) Investment | May 31, 2015 USD ($) | May 31, 2014 USD ($) | May 31, 2016 USD ($) Investment | Nov. 30, 2015 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Medical device excise tax |  |  |  |  |  |  |  |  |  |  |  | $ 2,416 | $ 4,142 | $ 3,829 | $ 12,000 |
Inventory write-off |  |  |  |  |  |  |  |  |  |  |  | 5,800 |  |  |  |
Write-off of hardware assets |  |  |  |  |  |  |  |  |  |  |  | $ 100 |  |  |  |
Costs for quality call to action program |  |  |  |  |  |  |  |  |  |  |  |  | 3,200 |  |  |
Number of observations | Observation |  | 3 | 1 | 6 | 12 |  |  | 5 |  |  |  |  |  |  |  |
Number of business days to provide response to FDA |  |  |  |  |  | 15 days | 15 days |  | 15 days |  | 15 days |  |  |  |  |
Short Term Investments Maturity Period |  |  |  |  |  |  |  |  |  |  |  | less than three months |  |  |  |
Investments in auction rate securities that failed auctions |  |  |  |  |  |  |  |  |  | $ 1,700 |  | $ 1,700 |  |  | $ 1,700 |
Number of investments | Investment |  |  |  |  |  |  |  |  |  | 2 |  | 2 |  |  | 2 |
Restocking charge percentage |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |
Deferred Tax Assets, Net |  |  |  |  |  |  |  |  |  |  |  |  | 18,389 |  |  |
Distribution Rights and Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired finite lived intangible assets |  |  |  |  |  |  |  |  |  | $ 3,300 |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Tax Assets, Net |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,400 |  |  | $ 3,500
Former President and Chief Executive Officer | Employee Stock Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of award | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Former President and Chief Executive Officer | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of award | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Former President and Chief Executive Officer | Performance Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of award | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivables period due |  |  |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |
Weighted average useful life |  |  |  |  |  |  |  |  |  |  |  | 18 years |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivables period due |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |
Weighted average useful life |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Undamaged product expiration date |  |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |
Machinery and equipment | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  |  |  |  | 8 years |  |  |  |
Machinery and equipment | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Building and building improvements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  |  |  |  | 39 years |  |  |  |
Computer software and equipment | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |
Computer software and equipment | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |

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