Related Party Transactions (Details) (Maximum [Member], USD $)	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Maximum [Member]
Related Party Transaction [Line Items]
Fees paid to related party firm, maximum	$ 120,000	$ 120,000
Percentage of fee paid to related party in relation to related party's total revenue, maximum	5.00%	5.00%

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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