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Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2014

Balance Sheet Information

Schedule of available-for-sale securities and gains and losses in accumulated other comprehensive income (loss)

Total available-for-sale securities and gains and losses in Accumulated Other Comprehensive Income (Loss) consist of the following (in thousands):

		September 30, 2014
		Amortized Cost			Gains in Accumulated Other Comprehensive Income			Losses in Accumulated Other Comprehensive Income			Estimated Fair Value
U.S. treasuries		$	90,523		$	35		$	(1	)	$	90,557
Corporate debt		69,109			93			(4		)	69,198
Government agency securities		63,191			8			—			63,199
Total available-for-sale securities		$	222,823		$	136		$	(5	)	$	222,954

		December 31, 2013
		Amortized Cost			Gains in Accumulated Other Comprehensive Income			Losses in Accumulated Other Comprehensive Income			Estimated Fair Value
U.S. treasuries		$	130,956		$	22		$	(1	)	$	130,977
Corporate debt		77,582			55			(36		)	77,601
Government agency securities		61,004			9			—			61,013
Commercial paper		11,947			—			—			11,947
Total available-for-sale securities		$	281,489		$	86		$	(37	)	$	281,538

Summary of fair value of short-term investments that have been in an unrealized loss position for less than 12 months

The table below shows the fair value of short-term investments that have been in an unrealized loss position for less than 12 months (in thousands):

		September 30, 2014
		Less than 12 months
		Estimated Fair Value			Gross Unrealized Losses
U.S. treasuries		$	15,006		$	(1	)
Corporate debt		7,221			(4		)
Total		$	22,227		$	(5	)

		December 31, 2013
		Less than 12 months
		Estimated Fair Value			Gross Unrealized Losses
Corporate debt		$	37,654		$	(36	)
U. S. treasuries		29,068			(1		)
Total		$	66,722		$	(37	)

Schedule of contractual maturities of available-for-sale debt securities

Contractual maturities of available-for-sale debt securities are as follows (in thousands):

		September 30, 2014
		Estimated Fair Value
Due in one year or less		$	135,948
Due in 1–2 years		87,006
Total available-for-sale securities		$	222,954

Schedule of inventories

Inventories are stated at the lower of cost (principally first-in, first-out) or market. Inventories consist of (in thousands):

		September 30,			December 31,
		2014			2013
Materials		$	26,305		$	34,301
Work in process		15,169			12,900
Finished goods		5,120			12,525
		$	46,594		$	59,726

Schedule of changes in goodwill

Changes in our goodwill are as follows (in thousands):

Beginning balance as of December 31, 2013		$	91,348
Purchase price adjustment (see Business Combinations)		173
Ending balance as of September 30, 2014		$	91,521

Schedule of changes in warranty liability

Changes in our warranty liability during the period are as follows (in thousands):

		September 30,
		2014			2013
Balance as of the beginning of period		$	5,662		$	4,942
Warranties issued during the period		2,536			2,778
Settlements made during the period		(3,160		)	(3,315		)
Changes in estimate during the period		259			—
Balance as of the end of period		$	5,297		$	4,405

Schedule of the components of accumulated other comprehensive income

The components of accumulated other comprehensive income are (in thousands):

		Gross			Taxes			Net
As of September 30, 2014
Translation adjustments		$	5,689		$	(392	)	$	5,297
Minimum pension liability		(1,160		)	424			(736		)
Unrealized gain on available-for-sale securities		131			(18		)	113
Accumulated other comprehensive income		$	4,660		$	14		$	4,674

		Gross			Taxes			Net
As of December 31, 2013
Translation adjustments		$	5,718		$	(392	)	$	5,326
Minimum pension liability		(1,160		)	424			(736		)
Unrealized gain on available-for-sale securities		49			(18		)	31
Accumulated other comprehensive income		$	4,607		$	14		$	4,621

Summary of share activities impacting common stock and additional paid-in-capital balances

Summary share activities impacting our common stock and additional paid-in capital balances are as follows (in thousands):

		For the nine months ended September 30, 2014
		Shares
Restricted Stock
Grants		221
Gross Vesting		173
Shares Withheld to Cover Taxes & Cancelled		(57	)
Net Shares Vested		116
Stock Options
Exercised		402

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