Segment Information - Net Sales by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	$ 16,200	$ 3,613
UNITED STATES
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	399	$ 3,613
GREECE
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	1,490
ITALY
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	194
JAPAN
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	24
CHINA
Schedule of Segment Information Details Net Sales by Geographic Location [Line Items]
Net sales	$ 14,093