Note 6 - Facility Relocation - Facility Relocation Costs (Details) - Relocation of Omaha and Traverse City Biological Indicator Manufacturing Facilities [Member] $ in Thousands |
12 Months Ended |
|---|---|
|
Mar. 31, 2017
USD ($)
| |
| Beginning balance | |
| Facility relocation expense | 725 |
| Cash payments | (52) |
| Ending balance | $ 673 |