Disposal - Assets Held-for-Sale Balance Sheet Information (Details) - SVB India Finance Private Limited, (SVBIF) $ in Thousands	Dec. 31, 2014 USD ($)
Global Commercial Bank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets of SVBIF held-for-sale	$ 44,300
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	3,054
Securities purchased under agreement to resell and other short-term investments	11,898
Net loans	26,800
Premises and equipment, net	24
Accrued interest receivable and other assets	7,163
Total assets of SVBIF held-for-sale	48,939
Other Liabilities	4,686
Total liabilities of SVBIF held-for-sale	$ 4,686