Property, Equipment, and Related Depreciation (Details)	3 Months Ended
	Jun. 30, 2012
Leasehold improvements [Member]
Average estimated useful lives for property
Useful lives of property	10 years
Maximum [Member] | Machinery and equipment [Member]
Average estimated useful lives for property
Useful lives of property	10 years
Maximum [Member] | Furniture and fixtures [Member]
Average estimated useful lives for property
Useful lives of property	10 years
Maximum [Member] | Computer hardware and software [Member]
Average estimated useful lives for property
Useful lives of property	5 years
Minimum [Member] | Machinery and equipment [Member]
Average estimated useful lives for property
Useful lives of property	3 years
Minimum [Member] | Furniture and fixtures [Member]
Average estimated useful lives for property
Useful lives of property	3 years
Minimum [Member] | Computer hardware and software [Member]
Average estimated useful lives for property
Useful lives of property	3 years