Business Combination - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Nov. 24, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 01, 2013
Assets acquired:
Goodwill	$ 132,913		$ 81,229	$ 84,714
Pericom
Assets acquired:
Cash and cash equivalents		$ 48,806
Short-term investments		72,537
Accounts receivable, net		22,740
Inventory		22,488
Prepaid expenses and other current assets		5,793
Property, plant and equipment and fixed assets, net		72,210
Intangible assets		156,700
Goodwill		54,304
Other long-term assets		16,069
Total assets acquired		471,647
Liabilities assumed:
Accounts payable		16,925
Accrued liabilities and other		8,818
Income tax payable		1,498
Deferred tax liability		29,077
Other liabilities		12,155
Total liabilities assumed		68,473
Total net assets acquired		403,174
Total net assets acquired, net of cash acquired		$ 354,368
BCD Semiconductor Manufacturing Limited
Assets acquired:
Cash and cash equivalents					$ 29,819
Accounts receivable, net					20,862
Inventory					42,909
Prepaid expenses and other current assets					27,205
Property, plant and equipment and fixed assets, net					99,390
Deferred tax assets					1,612
Goodwill					2,518
Other long-term assets					5,497
Total assets acquired					247,012
Other intangible assets					17,200
Liabilities assumed:
Lines of credit					17,336
Accounts payable					34,758
Accrued liabilities and other					16,703
Deferred tax liability					5,055
Other liabilities					18,425
Total liabilities assumed					92,277
Total net assets acquired					$ 154,735