Property and Equipment (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	13 Months Ended				6 Months Ended
	Jun. 30, 2011 Credit agreement	Jun. 30, 2012 Credit agreement	Mar. 31, 2011 Real Property squarefeet	Mar. 31, 2011 Land	Mar. 31, 2011 Building	Jun. 30, 2012 Furniture and equipment Capital lease agreements
El Segundo Building
Area of real property purchased (in square feet)			82,000
Total purchase price			$ 9.6	$ 7.4	$ 2.2
Maximum commitment for loan	10.9
Amount drawn		10.1
Outstanding loan		9.9
Capital Leases
Capital lease obligation						$ 4.7
Borrowing term	5 years					5 years