Certain Financial Statement Information (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013
Schedule of Inventories
Finished goods	$ 6,247	$ 7,247
Work in process	4,855	4,098
Raw materials	1,613	1,555
Inventories, total	$ 12,715	$ 12,900	[1]

[1] Amounts have been derived from the March 31, 2013 audited consolidated financial statements.