Contingencies (Details) (USD $)	1 Months Ended													6 Months Ended
	Sep. 30, 2012	Jan. 31, 2012	Mar. 31, 2011	Nov. 30, 2010	Oct. 30, 2010	Sep. 30, 2010	Sep. 30, 2009	Aug. 31, 2009	Jan. 31, 2009 Amendments	Mar. 31, 2008	Nov. 30, 2007	Sep. 30, 2006	Feb. 28, 2001	Sep. 30, 2012 Company	Apr. 30, 2011
Contingencies (Textual) [Abstract]
Aggregate contribution allocation for the defense and settlement	$ 19,000
Percent of contribution to the total waste		0.50%
Reimbursement seeking for contract damages from Xtera			1,000,000
Reimbursement seeking by Xtera for development and royalties previously paid by TPack															$ 1,700,000
Lawsuit filed period				November 2010			September 2009	August 2009			November 2007
Amendments approved to consent decree									2
Business Acquisition Period						2010-09
Company known along with other companies														100
Consent Decree Approved by US District Court													2001-02
Court Approved Two Amendments to the Consent Decree									2009-01
Loss contingency law suit stay granted date										2008-03
Contract Entered Period												2006-09
Case Dismissed by Court					2010-10
Action Was Resumed In March 2011			2011-03