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Property, Plant and Equipment (Detail) (USD $)
Mar. 31, 2013
Mar. 31, 2012
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost $ 31,225,604 $ 34,142,665
Less: Accumulated depreciation and amortization (26,344,562) (27,875,525)
Property Plant And Equipment Excluding Construction In Progress, Total 4,881,042 6,267,140
Capital work- in- progress 899,130 1,131,941
Property, plant and equipment-net 5,780,172 7,399,081
Furniture and fixtures
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost 473,115 497,334
Computer equipment and software
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost 25,966,628 29,744,643
Office equipment
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost 405,394 413,084
Vehicles
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost 281,016 256,262
Leasehold improvements
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost 646,925 677,932
Website development costs
   
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - at cost $ 3,452,526 $ 2,553,410