XML 69 R36.htm IDEA: XBRL DOCUMENT  v2.3.0.11

Deferred Revenue and Advances from Customers (Narrative) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Advances from customers	$ 30.0	$ 3.0
DOE [Member]
Advances from customers	$ 26.9	$ 1.2

X

- Definition

The current portion of prepayments received from customers for goods or services to be provided in the future.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CustomerAdvancesCurrent
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant