Warranties Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Product Liability Contingency [Line Items]
Product Warranty Accrual, Current	$ 12,510	$ 17,769
Product Warranty Accrual, Noncurrent	$ 18,737	$ 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