The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References+ Details

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 6

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 19

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.12)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 7

+ Details

Investments Narrative (Details)	3 Months Ended		6 Months Ended			1 Months Ended					3 Months Ended		6 Months Ended
Investments Narrative (Details)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Apr. 30, 2013 USD ($)	Apr. 30, 2013 J-Devices [Member] USD ($)	Apr. 30, 2013 J-Devices [Member] JPY (¥)	Jan. 31, 2013 J-Devices [Member] USD ($)	Jan. 31, 2013 J-Devices [Member] JPY (¥)	Oct. 31, 2012 J-Devices [Member] JPY (¥)	Jun. 30, 2013 J-Devices [Member] USD ($)	Jun. 30, 2012 J-Devices [Member] USD ($)	Jun. 30, 2013 J-Devices [Member] USD ($)	Jun. 30, 2012 J-Devices [Member] USD ($)	Dec. 31, 2012 J-Devices [Member]	Mar. 31, 2012 J-Devices [Member]	Jun. 30, 2013 Ownership Threshold 2014 [Member] J-Devices [Member]	Jun. 30, 2013 Ownership Threshold 2015 [Member] J-Devices [Member]	Jun. 30, 2013 Amkor [Member] J-Devices [Member]	Apr. 30, 2013 Former NMD Shareholders [Member] J-Devices [Member]	Apr. 30, 2013 Toshiba [Member] J-Devices [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of ownership held by Company or equity interests						60.00%	60.00%				60.00%		60.00%		30.00%	30.00%			60.00%	34.00%	6.00%
Payments to acquire equity method investments (in dollars and yes)						$ 67,400,000	¥ 6,700,000,000
Maximum ownership ratio of call options																	66.00%	80.00%
Minimum ownership threshold, put option																		80.00%
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity					5,100,000
Equity in earnings of unconsolidated affiliate (in dollars)	1,445,000	892,000	1,500,000	2,880,000							1,400,000	900,000	1,500,000	2,900,000
Equipment Purchase Amount from Lesee Option Exercise										761,400,000
Proceeds from Sale of Property, Plant, and Equipment								$ 8,800,000	¥ 761,400,000