Property and Equipment - Summarized Category of Fixed Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	$ 5,718	$ 5,575
Less accumulated depreciations	(1,770)	(1,685)
Total property, plant & equipment, net	3,948	3,890
Idle Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	3,798	3,758
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	1,360	1,354
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	348	344
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	178	110
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant & equipment, gross	$ 34	$ 9