Property, Plant and Equipment - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation expenses	$ 28,475	$ 25,934
Impairment charges	10,269	6,378
Six Inch Fabrication Facility Closure [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	10,269		10,269
Six Inch Fabrication Facility Closure [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	1,763		1,763
Six Inch Fabrication Facility Closure [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	8,239		8,239
Six Inch Fabrication Facility Closure [Member] | Other tangible assets [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	267		267
Dawin Electronics [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment charges		$ 508		$ 508