Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2012

Finite-Lived Intangible Assets, Net [Abstract]

Schedule of finite-lived intangible assets

The following table presents our intangible assets as of the dates specified below:

	December 31, 2012							September 30, 2012
Description	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Trade name and trademarks	$	3,143	$	(1,008	)	$	2,135	$	3,125	$	(878	)	$	2,247
Technology	25,422		(19,018		)	6,404		25,396		(18,093		)	7,303
Customer relationships	126,374		(33,305		)	93,069		126,123		(29,778		)	96,345
Total	$	154,939	$	(53,331	)	$	101,608	$	154,644	$	(48,749	)	$	105,895

Schedule of expected amortization expense

The following table presents the estimated future amortization expense related to intangible assets held at December 31, 2012:

Years Ended September 30,	Amortization of Intangible Assets
2013 (January 1, 2013, through September 30, 2013)	$	12,946
2014	15,978
2015	15,868
2016	13,514
2017	12,027
Thereafter	31,275
Total	$	101,608