Note 4 - Inventories (Tables)

9 Months Ended

Dec. 31, 2012

Schedule of Inventory, Current [Table Text Block]

	December 31,		March 31,
	2012		2012
Finished goods, net	$	26,564	$	29,051
Raw materials		21,446		20,434
Work in progress		6,389		4,340
Total inventories, net	$	54,399	$	53,825