Related Party Transactions (Details 2) - May. 08, 2015 - Waiver And Option Agreement - USD ($) $ in Millions	Total
Related Party Transactions
Agreement reimbursement percentage if option is exercised	110.00%
Agreement reimbursement of up front fee if option is exercised	$ 4

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