Segment Information - Major Customer (Details) (Americas [Member])	3 Months Ended	9 Months Ended		3 Months Ended	6 Months Ended
	Sep. 30, 2012 NRG Solar, Inc. [Member]	Sep. 29, 2013 NRG Solar, Inc. [Member]	Sep. 30, 2012 NRG Solar, Inc. [Member]	Sep. 29, 2013 Mid American Energy Holdings Company [Member]	Jun. 30, 2013 Mid American Energy Holdings Company [Member]
Revenue, Major Customer [Line Items]
Revenue as a percentage of total revenue	46.00%	23.00%	32.00%	33.00%	21.00%