v2.4.1.9

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Notes to Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents [Table Text Block]

Cash and cash equivalents at December 31, 2014 and 2013 consisted of the following (in thousands):

	December 31,
	2014				2013
Money market and demand accounts	$	307,995			$	465,722
Commercial paper	120,572				31,992
	$	428,567			$	497,714

Realized Gain (Loss) on Investments [Table Text Block]

lized gains and losses for 2014, 2013 and 2012 were as follows (in thousands):

Year		Gains				Losses				Net
2014		$	48			$	(681	)		$	(633	)
2013		$	166			$	(678	)		$	(512	)
2012		$	14			$	(249	)		$	(235	)

Short-te

Available-for-sale Securities [Table Text Block]

Short-term investments as of December 31, 2014 and 2013 consisted of the following (in thousands):

	December 31,
	2014				2013
Commercial paper	$	86,877			$	160,486
U.S. government agency instruments	151,618				31,688
Corporate bonds and asset backed securities	36,866				8,563
	$	275,361			$	200,737

Fair Value, Measurement Inputs, Disclosure [Table Text Block]

Fair Value Measurements

We use various valuation techniques and assumptions when measuring fair value of our assets and liabilities. We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. This guidance established a hierarchy that prioritizes fair value measurements based on the types of input used for the various valuation techniques (market approach, income approach and cost approach). The levels of the hierarchy are described below:

Level 1 Inputs — Level 1 includes financial instruments for which quoted market prices for identical instruments are available in active markets.

Level 2 Inputs — Level 2 includes financial instruments for which there are inputs other than quoted prices included within Level 1 that are observable for the instrument such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets with insufficient volume or infrequent transactions (less active markets) or model-driven valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data, including market interest rate curves, referenced credit spreads and pre-payment rates.

Level 3 Inputs — Level 3 includes financial instruments for which fair value is derived from valuation techniques including pricing models and discounted cash flow models in which one or more significant inputs are unobservable, including the company’s own assumptions. The pricing models incorporate transaction details such as contractual terms, maturity and, in certain instances, timing and amount of future cash flows, as well as assumptions related to liquidity and credit valuation adjustments of marketplace participants.

Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of financial assets and financial liabilities and their placement within the fair value hierarchy. We use quoted market prices for similar assets to estimate the fair value of our Level 2 investments. Our financial assets are included within short-term investments on our consolidated balance sheets, unless otherwise indicated. Our financial assets that are accounted for at fair value on a recurring basis are presented in the tables below as of December 31, 2014 and December 31, 2013 (in thousands):

	Fair Value as of December 31, 2014
	Level 1				Level 2				Level 3				Total
Assets:
Money market and demand accounts (a)	$	307,995			$	—			$	—			$	307,995
Commercial paper (b)	—				207,449				—				207,449
U.S. government securities	—				151,618				—				151,618
Corporate bonds, asset backed and other securities	671				36,195				—				36,866
	$	308,666			$	395,262			$	—			$	703,928

_______________

(a) Included within cash and cash equivalents.

(b) Includes $120.6 million of commercial paper that is included within cash and cash equivalents.

	Fair Value as of December 31, 2013
	Level 1				Level 2				Level 3				Total
Assets:
Money market and demand accounts (a)	$	465,722			$	—			$	—			$	465,722
Commercial paper (b)	—				192,478				—				192,478
U.S. government securities	—				31,688				—				31,688
Corporate bonds and asset backed securities	1,398				7,165				—				8,563
	$	467,120			$	231,331			$	—			$	698,451

_______________

(a) Included within cash and cash equivalents.

(b) Includes $32.0 million of commercial pap

Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]

Patents consisted of the following (in thousands, except for useful life data):

	December 31,
	2014				2013
Weighted average estimated useful life (years)	10.0				10.2
Gross patents	$	455,447			$	358,793
Accumulated amortization	(189,907		)		(152,422		)
Patents, net	$	265,540			$	206,371

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The estimated aggregate amortization expense for the next five years related to our patents balance as of December 31, 2014 is as follows (in thousands):

2015	$	39,902
2016	38,485
2017	35,686
2018	31,124
2019	28,650

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

Deferred charges are recorded in our Consolidated Balance Sheets within the following captions (in thousands):

	December 31,
	2014				2013
Prepaid and other current assets
Deferred commission expense	$	342			$	290
Deferred contract origination costs	79				79
Deferred financing costs	1,303				1,303
Other non-current assets
Deferred commission expense	495				750
Deferred contract origination costs	79				158
Deferred financing costs	326				1,629

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table reconciles the numerator and the denominator of the basic and diluted net income per share computation (in thousands, except for per share data):

	For the Year Ended December 31,
	2014								2013								2012
	Basic				Diluted				Basic				Diluted				Basic				Diluted
Numerator:
Net income applicable to common shareholders	$	104,342			$	104,342			$	38,165			$	38,165			$	271,804			$	271,804
Denominator:
Weighted-average shares outstanding: Basic	39,420				39,420				41,115				41,115				43,070				43,070
Dilutive effect of stock options, RSUs and convertible securities					459								309								326
Weighted-average shares outstanding: Diluted					39,879								41,424								43,396
Earnings Per Share:
Net income: Basic	$	2.65			2.65				$	0.93			0.93				$	6.31			6.31
Dilutive effect of stock options, RSUs and convertible securities					(0.03		)						(0.01		)						(0.05		)
Net income: Diluted					$	2.62							$	0.92							$	6.26

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