Related Parties (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2014	Dec. 31, 2013
Gold Hill 08 Funds
Related Party Transaction [Line Items]
Line of credit facility, maximum borrowing capacity	$ 65
Gold Hill 08 Funds
Related Party Transaction [Line Items]
Line of credit facility amount syndicated to another lender	13
Interest rate associated with related party loan facility	national Prime plus one percent
Loan amount outstanding to related party during period, maximum	23
Revolving line of credit facility, outstanding amount	$ 19	$ 23
Gold Hill Capital 2008, LLC
Related Party Transaction [Line Items]
SVBFG Ownership of each Fund (4)	83.80%

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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