SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 0.8	$ 0.6	$ 0.4
Depreciation expense, capital leases	$ 0.3	$ 0.2	$ 0.1
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	1 year
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	10 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Production equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Production equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Research and development equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	2 years
Research and development equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	7 years