The Company and Summary of Significant Accounting Policies - Cumulative Effect on the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Assets:
Property, plant and equipment, net	$ 127,183	$ 104,961	$ 200,358
Operating lease assets	144,746	149,442	0
Liabilities:
Accrued liabilities	218,751	273,052	264,887
Operating lease liabilities, less current portion	156,289	153,158	0
Deferred tax liabilities, net	283,669	310,586	309,097
Other non-current liabilities	120,713	105,264	218,879
Shareholders' Equity:
Retained earnings	$ 1,021,879	845,898	841,050
ASU 2016-02
Assets:
Property, plant and equipment, net		(95,397)
Operating lease assets		149,442
Liabilities:
Accrued liabilities		8,165
Operating lease liabilities, less current portion		153,158
Deferred tax liabilities, net		1,489
Other non-current liabilities		(113,615)	$ (109,800)
Shareholders' Equity:
Retained earnings		$ 4,848