Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2015

Accounting Policies [Abstract]

Schedule of Property Plant and Equipment Useful Lives

	Estimated Useful Lives (in years)
Buildings		40
Land improvements		20
Computer equipment and furniture	3	-	5
Leasehold improvements(1)	3	-	10

⁽¹⁾    Amortized over the shorter of the lease term or estimated life.

Property, Plant, and Equipment

A summary of property, plant, and equipment, net is as follows:

As of January 31,	2015			2014
Computer equipment and furniture	$	334,817		$	319,698
Buildings and building equipment	110,854			101,073
Land and improvements	21,650			21,321
Leasehold improvements	38,035			38,900
Property, plant, and equipment, gross	505,356			480,992
Less: accumulated depreciation and amortization	(334,619		)	(320,827		)
Property, plant, and equipment, net	$	170,737		$	160,165

Schedule Of Purchased Technology and Other Intangible Asset Amortization Expense

Total purchased technology and other intangible asset amortization expense were as follows:

Year ended January 31,	2015		2014		2013
Purchased technology and other intangible asset amortization expense	$	15,265	$	9,828	$	13,716

Schedule of Goodwill and Intangible Assets

As of January 31, 2015, the carrying value of goodwill and intangible assets was as follows:

As of January 31,	2015		2014
Goodwill	$	599,929	$	549,044
Purchased technology and in-process research and development, net(1)	$	23,981	$	11,210
Other intangible assets, net(2)	$	21,596	$	11,589

(1)Includes accumulated amortization of $131,143 as of January 31, 2015 and $124,536 as of January 31, 2014.

(2)Includes accumulated amortization of $78,788 as of January 31, 2015 and $71,216 as of January 31, 2014.

Schedule of Goodwill Activity

The following table summarizes goodwill activity:

Balance as of January 31, 2013	$	535,932
Acquisitions	12,545
Earnouts	288
Foreign exchange	279
Balance as of January 31, 2014	$	549,044
Acquisitions	57,476
Earnouts	13
Foreign exchange	(6,604		)
Balance as of January 31, 2015	$	599,929

Schedule of Expected Amortization Expense

We estimate the aggregate amortization expense related to purchased technology and other intangible assets will be as follows:

Fiscal years ending January 31,
2016	$	14,418
2017	11,270
2018	9,584
2019	7,970
2020	2,063
Thereafter	272
Aggregate amortization expense	$	45,577

Advertising Expense

Advertising expense is included in marketing and selling expense in the accompanying consolidated statement of income as follows:

Year ended January 31,	2015		2014		2013
Advertising expense	$	2,985	$	2,654	$	2,326

Sale Of Receivables

We sold the following receivables to financing institutions on a non-recourse basis and recognized the following gain on the sale of those receivables:

Year ended January 31,	2015			2014			2013
Trade receivables, short-term	$	12,715		$	11,705		$	9,617
Term receivables, long-term	10,461			11,912			11,094
Total receivables sold	23,176			23,617			20,711
Net proceeds	22,572			22,943			20,198
Discount on sold receivables	(604		)	(674		)	(513		)
Unaccreted interest on sold receivables	922			890			568
Gain on sale of receivables	$	318		$	216		$	55