Summary of Significant Accounting Policies (Basis of Presentation and Principles of Consolidation) (Details) - OnDeck Australia [Member]	Jun. 30, 2015
Noncontrolling Interest [Line Items]
Ownership percentage	55.00%
Ownership percentage by non-affiliated parties	45.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_MinorityInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration