Acquisitions (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value of Consideration Transferred:



(in thousands)	LST		Granta Design		Other Acquisitions		Total
Cash	$	470,623	$	208,736	$	136,232	$	815,591
Ansys common stock	307,173		—		—		307,173
Total consideration transferred at fair value	$	777,796	$	208,736	$	136,232	$	1,122,764

Fair Value of Consideration Transferred:



(in thousands)	OPTIS
Cash	$	290,983

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed:



(in thousands)	OPTIS
Cash	$	7,957
Accounts receivable and other tangible assets	15,910
Developed software and core technologies (10-year weighted-average life)	47,597
Customer lists (12-year life)	41,303
Trade names (9-year weighted-average life)	10,749
Accounts payable and other liabilities	(11,941		)
Deferred revenue	(2,470		)
Net deferred tax liabilities	(23,438		)
Total identifiable net assets	$	85,667
Goodwill	$	205,316

Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed:



(in thousands)	LST			Granta Design			Other Acquisitions			Total
Cash	$	8,520		$	13,644		$	6,231		$	28,395
Accounts receivable and other tangible assets	20,568			6,941			10,746			38,255
Developed software and core technologies (10-year weighted-average life)	167,700			32,445			25,018			225,163
Customer lists (15-year weighted-average life)	25,900			20,016			15,743			61,659
Trade names (10-year weighted-average life)	10,600			4,579			2,051			17,230
Indemnification asset	34,039			—			—			34,039
Accounts payable and other liabilities	(3,721		)	(6,714		)	(6,425		)	(16,860		)
Deferred revenue	(3,565		)	(1,426		)	(1,889		)	(6,880		)
Uncertain tax positions	(34,039		)	—			(257		)	(34,296		)
Net deferred tax liabilities	(47,596		)	(9,822		)	(8,294		)	(65,712		)
Total identifiable net assets	$	178,406		$	59,663		$	42,924		$	280,993
Goodwill	$	599,390		$	149,073		$	93,308		$	841,771

Business Acquisition, Pro Forma Information

The table presented below reflects the impact of OPTIS from the date of acquisition to December 31, 2018. The operating loss does not include integration costs borne directly by us and our non-OPTIS subsidiaries as a result of the acquisition.



(in thousands)	Year Ended December 31, 2018
Revenue	$	18,532
Operating loss	$	(5,462	)

The table presented below reflects the aggregate impact on our results of operations of the 2019 acquisitions from the date of acquisition to December 31, 2019. The operating income does not include integration costs borne directly by us and our non-acquired subsidiaries as a result of the acquisitions.



(in thousands)	Year Ended December 31, 2019
Revenue	$	44,079
Operating income	$	6,733