Note 16 - Segment and Geographic Information (Tables)

6 Months Ended

Nov. 30, 2015

Notes Tables

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

	Three Months Ended				Six Months Ended
	November 30				November 30
	2015		2014		2015		2014
Net sales by product group:
Transfusion	$	80,521		81,652		161,710		168,020
Transplant & Molecular		15,728		14,625		31,251		30,697
Total	$	96,249		96,277		192,961		198,717

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

	Three Months Ended				Six Months Ended
	November 30				November 30
	2015		2014		2015		2014
Net sales to customers by geography are as follows:
United States	$	61,024		57,099		122,426		119,612
Europe (A)		18,119		20,122		35,919		41,569
Canada		3,952		4,711		7,851		9,602
Other		13,154		14,345		26,765		27,934
Total	$	96,249		96,277		192,961		198,717

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

	As of
	November 30, 2015		May 31, 2015
Long-lived assets (excluding goodwill and intangibles) by geography:
United States	$	52,352		52,764
Europe (B)		13,891		14,542
Canada		3,613		4,029
Other (C)		2,370		2,239
Total	$	72,226		73,574

	As of
	November 30, 2015		May 31, 2015
Concentration of net assets by geography:
United States	$	222,590		241,522
Europe		99,037		100,071
Canada		28,738		30,274
Other (C)		11,746		11,814
Total	$	362,111		383,681