Purchased Intangible Assets and Goodwill - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 49,384	$ 49,384
Accumulated amortization	20,276	13,123
Net carrying amount	29,108	36,261
Developed Technology Rights [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	16,032	16,032
Accumulated amortization	6,905	3,593
Net carrying amount	9,127	12,439
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	28,411	28,411
Accumulated amortization	9,608	6,085
Net carrying amount	18,803	22,326
Order or Production Backlog [Member] | Certain Flash Memory Product Assets from Atmel Corporation [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	2,779	2,779
Accumulated amortization	2,779	2,779
Order or Production Backlog [Member] | S3 Asic Semiconductors Limited [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	210	210
Accumulated amortization	210	210
Non-compete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	662	662
Accumulated amortization	588	398
Net carrying amount	74	264
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	1,290	1,290
Accumulated amortization	186	58
Net carrying amount	$ 1,104	$ 1,232