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

12 Months Ended

Jan. 31, 2016

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,	2016			2015
Computer equipment and furniture	$	351,982		$	334,817
Buildings and building equipment	115,312			110,854
Land and improvements	21,489			21,650
Leasehold improvements	41,906			38,035
Property, plant, and equipment, gross	530,689			505,356
Less: accumulated depreciation and amortization	(348,597		)	(334,619		)
Property, plant, and equipment, net	$	182,092		$	170,737

Schedule Of Purchased Technology and Other Intangible Asset Amortization Expense

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

Year ended January 31,	2016		2015		2014
Purchased technology and other intangible asset amortization expense	$	16,019	$	15,265	$	9,828

Schedule of Goodwill and Intangible Assets

As of January 31, 2016, the carrying value of goodwill and intangible assets was as follows:

As of January 31,	2016			2015
Goodwill	$	606,842		$	599,929
Purchased technology and in-process research and development, gross	$	158,102		$	155,124
Less: accumulated amortization	(138,375		)	(131,143		)
Purchased technology and in-process research and development, net	$	19,727		$	23,981
Other intangible assets, gross	$	105,162		$	100,384
Less: accumulated amortization	(87,443		)	(78,788		)
Other intangible assets, net	$	17,719		$	21,596

Schedule of Goodwill Activity

The following table summarizes goodwill activity:

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
Acquisitions	8,500
Foreign exchange	(1,587		)
Balance as of January 31, 2016	$	606,842

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,
2017	$	12,889
2018	11,316
2019	9,559
2020	3,077
2021	548
Thereafter	57
Aggregate amortization expense	$	37,446

Advertising Expense

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

Year ended January 31,	2016		2015		2014
Advertising expense	$	3,683	$	2,985	$	2,654

Reclassifications

The amounts in our fiscal year 2015 consolidated balance sheet have been reclassified as follows:

As of January 31, 2015	As Originally Reported		As Reclassified
Prepaid expenses and other	$	22,357	$	21,405
Other assets	$	64,671	$	62,609
Notes payable	$	230,400	$	227,386