Investments Narrative (Details)	3 Months Ended			1 Months Ended			3 Months Ended		1 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2012	Jan. 31, 2013 J-Devices [Member] USD ($)	Jan. 31, 2013 J-Devices [Member] JPY (¥)	Oct. 31, 2012 J-Devices [Member] JPY (¥)	Mar. 31, 2013 J-Devices [Member] USD ($)	Mar. 31, 2012 J-Devices [Member] USD ($)	Apr. 30, 2013 J-Devices [Member] Subsequent Event [Member] USD ($)	Apr. 30, 2013 J-Devices [Member] Subsequent Event [Member] JPY (¥)	Mar. 31, 2013 Ownership Threshold 2014 [Member] J-Devices [Member]	Mar. 31, 2013 Ownership Threshold 2015 [Member] J-Devices [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Percentage Of Ownership Held By Majority Owners									34.00%	34.00%
Percentage of ownership held by Company or equity interest	30.00%		30.00%				30.00%		60.00%	60.00%
Payments to acquire equity method investments (in dollars and yes)									$ 67,000,000	¥ 6,700,000,000
Percentage of ownership held by Joint Venturer									6.00%	6.00%
Maximum ownership ratio of call options											66.00%	80.00%
Minimum ownership threshold, put option												80.00%
Equity in earnings of unconsolidated affiliate (in dollars)	55,000	1,988,000					100,000	2,000,000
Equipment Purchase Amount from Lesee Option Exercise						761,400,000
Proceeds from Sale of Property, Plant, and Equipment				$ 8,800,000	¥ 761,400,000