Legal Proceedings (Details Textual) (USD $)	Sep. 30, 2012	Jan. 31, 2011	Mar. 31, 2011 Payable in First Quarter of 2011 [Member]	Mar. 31, 2012 Payable in First Quarter of 2012 [Member]	Sep. 30, 2012 FCPA Civil Settlement [Member]	Sep. 30, 2012 Payable in First Quarter of 2013 [Member]	Mar. 31, 2011 Payable in First Quarter of 2011 [Member]	Mar. 31, 2012 Payable in First Quarter of 2012 [Member]	Sep. 30, 2012 DOJ Penalties Settlement [Member] FCPA Civil Settlement [Member]	Sep. 30, 2011 DOJ Penalties Settlement [Member] FCPA Civil Settlement [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Consideration			$ 3,200,000	$ 3,200,000		$ 2,300,000	$ 3,500,000	$ 2,300,000	$ 8,000,000	$ 6,400,000
Accrued estimated loss on settlement offer	750,000				2,300,000
Legal Proceedings (Additional Textual) [Abstract]
Loss Contingency, Range of Possible Loss, Maximum	1,100,000
Loss Contingency, Range of Possible Loss, Minimum	750,000
Settlement Offer Under Customer Bankruptcy Claim		250,000
Customer bankruptcy matter recently increased settlement offer	$ 750,000