Income Taxes - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended						6 Months Ended		9 Months Ended	12 Months Ended						3 Months Ended							6 Months Ended	0 Months Ended		6 Months Ended								0 Months Ended	3 Months Ended
	Jul. 13, 2011	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2010	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2012	Dec. 31, 2010	Dec. 31, 2007	Dec. 31, 2005	Dec. 31, 2004	Dec. 31, 2003	Dec. 31, 2002	Jun. 30, 2014 Fourth Quarter Twenty Eleven	Mar. 31, 2013 Fourth Quarter Twenty Eleven	Sep. 30, 2013 First Quarter Twenty Twelve	Jun. 30, 2014 Fourth Quarter Twenty Thirteen	Dec. 31, 2009 Software Development Entity	Mar. 31, 2013 Mumbai Tax Exemption Period Entity	Mar. 31, 2012 Mumbai Completion of Tax Holiday Period Entity	Jun. 30, 2014 India Tax Authority	Jul. 11, 2014 Subsequent Event India Tax Authority	Jul. 10, 2014 Subsequent Event India Tax Authority	Jun. 30, 2014 Minimum Alternate Tax (MAT)	Jun. 30, 2014 Certain Units In Sez First Five Years	Jun. 30, 2014 Certain Units In Sez Additional Two Years	Jun. 30, 2014 Certain Units In Sez Additional Three Years	Jun. 30, 2014 New Units In Sez First Five Years	Jun. 30, 2014 New Units In Sez Next Five Years	Jun. 30, 2014 New Units In Sez Another Five Years	Jun. 30, 2014 Other Disputes	Apr. 30, 2008 Three Units in Mumbai First Five Years	Mar. 31, 2013 Three Units in Mumbai First Five Years	Mar. 31, 2013 Unit in Chennai First Five Years
Income Taxes [Line Items]
Statutory rate		35.00%			35.00%			35.00%	35.00%
Income tax expense (benefit)								$ (1,200,000)
Valuation allowance		2,267,000						2,267,000
Valuation allowance, discrete tax item		640,000						640,000
Valuation allowance, net tax charge		1,627,000						1,627,000
Tax charge related to deferred tax assets on long-term gain on investment		1,670,000						1,670,000
Expense reversed for accrued interest and penalties		30,000
Accrued interest and penalties related to unrecognized tax benefits		1,290,000		1,400,000				1,290,000
Income taxes paid against liabilities for unrecognized tax benefits		32,740,000		26,370,000				32,740,000
Unrecognized tax liability		36,720,000		30,230,000				36,720,000
Unrecognized tax benefits, tax disputes								1,600,000
Unrecognized tax benefits, potential tax disputes								3,300,000
Corporate income taxes, exemption percentage																												100.00%	50.00%	50.00%	100.00%	50.00%	50.00%		100.00%	50.00%	100.00%
Number of units																					1	6	1
Exemption from corporate income taxes								10 years
Corporate income taxes, years								15 years
Unrecognized Indian income tax liabilities															4,910,000	4,910,000																		1,630,000
Income tax liability recognized													760,000	760,000																				840,000
Income tax adjustments provision reversal											330,000
Favorable adjustment upon review of tax liabilities										240,000
Branch Profit Tax (BPT)								15.00%
Accumulated deferred tax liability on BPT												1,730,000
Additional branch profit taxes if profits were not permanently invested		6,750,000						6,750,000
Accrued taxes, likely amount		244,100,000						244,100,000
Income tax audit, service tax objection amount				740,000		460,000	3,850,000										600,000			50,000
Service tax audit objection received	3,000,000
Closure of service tax audit objection amount		850,000						850,000
Received service tax refund																	320,000	150,000	130,000	200,000
Service tax return with show cause notice								2,040,000
Service tax penalty and interest demanded by tax department		3,950,000						3,950,000
Interest percentage on service tax penalty								18.00%
Dividend distribution tax																								16.995%		20.00%
Holding period for calculating gain on debt based mutual funds																								12 months	36 months
Corporate tax rate																								33.99%	22.66%
Local tax expense			20,000					10,000
Local tax liability gross				4,500,000
Local tax liability net				2,900,000
Minimum alternate tax credit expiration period																											10 years
Minimum Alternate Tax Credit																											$ 23,770,000