Business Acquisitions (Tables)

12 Months Ended

Mar. 31, 2016

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The table below represents the preliminary allocation of the purchase price, including adjustments to the purchase price allocation from the originally reported figures at September 30, 2015, to the net assets acquired based on their estimated fair values as of August 3, 2015, as well as the associated estimated useful lives of the acquired intangible assets at that date (amounts in thousands):



Assets acquired	Previously Reported September 30, 2015			Adjustments			March 31, 2016
Cash and cash equivalents	$	99,196		$	—		$	99,196
Accounts receivable, net	12,296			1,800			14,096
Inventories	78,967			(5,499		)	73,468
Prepaid expenses and other current assets	10,548			104			10,652
Property, plant and equipment, net	38,566			—			38,566
Goodwill	437,060			3,932			440,992
Purchased intangible assets	274,800			(1,300		)	273,500
Other assets	4,268			—			4,268
Total assets acquired	955,701			(963		)	954,738

Liabilities assumed
Accounts payable	(11,068		)	—			(11,068		)
Other current liabilities	(30,241		)	(1,400		)	(31,641		)
Deferred tax liabilities	(88,796		)	761			(88,035		)
Long-term income tax payable	(9,239		)	1,602			(7,637		)
Other long-term liabilities	(127		)	—			(127		)
Total liabilities assumed	(139,471		)	963			(138,508		)
Purchase price allocated	$	816,230		$	—		$	816,230

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination



Purchased Intangible Assets	Useful Life	August 3, 2015
	(in years)	(in thousands)
Core/developed technology	10	$	175,800
In-process technology	10	21,000
Customer-related	5	71,100
Backlog	1	5,600
Total purchased intangible assets		$	273,500

Business Acquisition, Pro Forma Information

The following unaudited pro-forma consolidated results of operations for the years ended March 31, 2016 and 2015 assume the Micrel acquisition occurred as of April 1, 2014. The pro-forma adjustments are mainly comprised of acquired inventory fair value costs and amortization of purchased intangible assets. The pro-forma results of operations are presented for informational purposes only and are not indicative of the results of operations that would have been achieved if the acquisition had taken place on April 1, 2014 or of results that may occur in the future (amounts in thousands except per share data):



	Year ended March 31,
	2016		2015
Net sales	$	2,283,517	$	2,352,727
Net income	$	365,654	$	278,673
Basic earnings per share	$	1.80	$	1.39
Diluted earnings per share	$	1.68	$	1.25

ISSC Technologies Corporation [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The table below represents the allocation of the purchase price to the net assets acquired based on their estimated fair values as of July 17, 2014 as well as the associated estimated useful lives of the acquired intangible assets at that date. The purchase price allocation was finalized as of June 30, 2015 (amounts in thousands):



Assets acquired	June 30, 2015
Cash and cash equivalents	$	15,120
Short-term investments	27,063
Accounts receivable, net	8,792
Inventories	16,542
Prepaid expenses and other current assets	2,501
Property, plant and equipment, net	2,637
Goodwill	154,788
Purchased intangible assets ⁽¹⁾	147,800
Other assets	1,370
Total assets acquired	376,613

Liabilities assumed
Accounts payable	(9,860		)
Other current liabilities	(16,535		)
Long-term income tax payable	(4,791		)
Deferred tax liability	(25,126		)
Other long-term liabilities	(245		)
Total liabilities assumed	(56,557		)
Net assets acquired including noncontrolling interest	320,056
Less: noncontrolling interest	(52,467		)
Net assets acquired	$	267,589

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination



⁽¹⁾ Purchased Intangible Assets	Useful Life	July 17, 2014
	(in years)	(in thousands)
Core/developed technology	10	$	68,900
In-process technology	10	27,200
Customer-related	3	51,100
Backlog	1	600
		$	147,800

Supertex Inc. [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The table below represents the allocation of the purchase price to the net assets acquired based on their estimated fair values as of April 1, 2014 as well as the associated estimated useful lives of the acquired intangible assets at that date. The purchase price allocation was finalized on March 31, 2015 (amounts in thousands):



Assets acquired	March 31, 2015
Cash and cash equivalents	$	14,790
Short-term investments	140,984
Accounts receivable, net	7,047
Inventories	27,630
Prepaid expenses	1,493
Deferred tax assets	2,456
Other current assets	12,625
Property, plant and equipment, net	15,679
Goodwill	143,160
Purchased intangible assets ⁽¹⁾	89,600
Other assets	325
Total assets acquired	455,789

Liabilities assumed
Accounts payable	(8,481		)
Accrued liabilities	(19,224		)
Long-term income tax payable	(3,796		)
Deferred tax liability	(32,511		)
Total liabilities assumed	(64,012		)
Net assets acquired	$	391,777

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination



⁽¹⁾ Purchased Intangible Assets	Useful Life	April 1, 2014
	(in years)	(in thousands)
Core/developed technology	10	$	68,900
In-process technology	10	1,900
Customer-related	2	17,700
Backlog	1	1,100
		$	89,600