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Note 10 - Segment Data - Operating Segment Information (Details) - USD ($)
$ in Thousands

3 Months Ended

Jun. 30, 2019

Jun. 30, 2018

Revenues

^[1]

$ 26,288

$ 25,142

Gross profit

16,139

15,091

Reconciling items

^[2]

(10,779)

(10,691)

Earnings before income taxes

5,360

4,400

Sterilzation and Disinfection Control [Member]

Revenues

^[1]

12,110

11,348

Gross profit

8,505

7,812

Reconciling items

^[2]

Earnings before income taxes

Instruments [Member]

Revenues

^[1]

9,544

8,731

Gross profit

6,063

5,633

Reconciling items

^[2]

Earnings before income taxes

Cold Chain Monitoring [Member]

Revenues

^[1]

3,317

3,223

Gross profit

1,244

1,464

Reconciling items

^[2]

Earnings before income taxes

Cold Chain Packaging [Member]

Revenues

^[1]

1,317

1,840

Gross profit

327

182

Reconciling items

^[2]

Earnings before income taxes

[1]	Intersegment revenues are not significant and are eliminated to arrive at consolidated totals.
[2]	Reconciling items include selling, general and administrative, research and development, and other expenses.

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- Definition

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