Disposal - Assets Held-for-Sale (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Disposal Group, Held-for-sale, Not Discontinued Operations \| SVB India Finance Private Limited, (SVBIF)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets of SVBIF held-for-sale	$ 0	$ 44,300,000

Amount classified as assets attributable to disposal group held for sale or disposed of.

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