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Warranties Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Product Liability Contingency [Line Items]
Product Warranty Accrual, Current	15,297	$ 17,769
Product Warranty Accrual, Noncurrent	16,820	$ 18,352
Precision Power Products [Member] \| Minimum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Term	18 months
Precision Power Products [Member] \| Maximum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Term	24 months
Inverters [Member] \| Minimum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Term	3 years
Inverters [Member] \| Maximum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Term	10 years

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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