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 3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Apr. 02, 2013
Kentrox [Member]
Mar. 02, 2014
CSI [Member]
Jun. 30, 2013
Restatement Adjustment [Member]
Business Acquisition [Line Items]          
Equity Method Investment, Ownership Percentage     100.00% 100.00%  
Cost of revenue $ 18,141,000 $ 14,039,000 [1]     $ 359,000
CostofRevenueAdjustmentUsingPreviousAccountingGuidance 255,000        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income   $ 0      
[1] Certain amounts have been reclassified to reflect a change in accounting principle.