Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details Textual)

v2.4.0.8
Basis of Presentation (Details Textual) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Apr. 02, 2013
Kentrox [Member]
Mar. 02, 2014
CSI [Member]
Sep. 30, 2013
Restatement Adjustment [Member]
Sep. 30, 2013
Restatement Adjustment [Member]
Business Acquisition [Line Items]                
Equity Method Investment, Ownership Percentage         100.00% 100.00%    
Cost of revenue $ 15,581,000 $ 17,938,000 [1] $ 33,722,000 $ 31,977,000 [1]     $ 401,000 $ 760,000
CostofRevenueAdjustmentUsingPreviousAccountingGuidance 245,000   500,000          
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income $ 0 $ 0 $ 0 $ 0        
[1] Certain amounts have been reclassified to reflect a change in accounting principle. See Note 1.