Note 15 - Segment and Geographic Information (Tables)

9 Months Ended

Feb. 28, 2017

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended				Nine Months Ended
	February 28		February 29		February 28		February 29
	2017		2016		2017		2016
Net sales by product group:
Transfusion	$	77,881		73,589		236,165		235,296
Transplant & Molecular		16,083		15,304		50,068		46,558
Total	$	93,964		88,893		286,233		281,854

Revenue from External Customers by Products and Services [Table Text Block]

	Three Months Ended				Nine Months Ended
	February 28		February 29		February 28		February 29
	2017		2016		2017		2016
Net sales to customers by geography are as follows:
United States	$	59,682		57,435		179,654		179,878
Europe (A)		17,181		16,609		52,756		52,517
Canada		3,721		3,233		11,245		11,084
Other		13,380		11,616		42,578		38,375
Total	$	93,964		88,893		286,233		281,854

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	As of
	February 28, 2017		May 31, 2016
Long-lived assets (excluding goodwill and intangibles) by geography:
United States	$	55,308		55,080
Europe (B)		15,292		14,729
Canada		3,536		3,543
Other (C)		2,656		2,663
Total	$	76,792		76,015

	As of
	February 28, 2017		May 31, 2016
Concentration of net assets by geography:
United States	$	175,891		200,226
Europe		93,221		102,593
Canada		29,821		28,617
Other (C)		11,494		13,110
Total	$	310,427		344,546