Subsequent Events (Details) (USD $)	3 Months Ended	9 Months Ended	0 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Oct. 14, 2013 Subsequent event Capstone
Subsequent Events
Monthly base rental payments for sublease	$ 100,000	$ 200,000	$ 400,000	$ 600,000	$ 12,000
Minimum notice period required for adjusting space needs under sublease arrangments					30 days

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration