Interim Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified		Total		Common Stock	Additional Paid-in Capital	Retained Earnings		Accumulated Other Comprehensive Income (Loss)	Total SVBFG Stockholders’ Equity		Noncontrolling Interests
Balance at Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effective of adopting ASU 2014-01 (Accounting Standards Update 2014-01)	[1]	$ (4,635)				$ (4,635)			$ (4,635)
Balance at Dec. 31, 2013 (Previously Reported)		3,079,328		46	624,256	1,390,732		(48,764)	1,966,270		1,113,058
Balance (in shares) at Dec. 31, 2013 (Previously Reported)				45,800,418
Balance at Dec. 31, 2013		3,074,693		46	624,256	1,386,097		(48,764)	1,961,635		1,113,058
Balance (in shares) at Dec. 31, 2013				45,800,418
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)				103,341
Common stock issued under employee benefit plans, net of restricted stock cancellations		4,254		0	4,254				4,254
Common stock issued under ESOP (in shares)				30,762
Common stock issued under ESOP		3,890			3,890				3,890
Income tax benefit from stock options exercised, vesting of restricted stock and other		1,996			1,996				1,996
Net income		274,355	[1],[2]			90,950	[1]		90,950	[1]	183,405
Capital calls and distributions, net		(23,482)									(23,482)
Net change in unrealized gains and losses on available-for-sale securities, net of tax		17,488						17,488	17,488
Foreign currency translation adjustments, net of tax		886						886	886
Share-based compensation expense		7,892			7,892				7,892
Other, net		23			23	0			23
Balance at Mar. 31, 2014		3,361,995	[1]	46	642,311	1,477,047	[1]	(30,390)	2,089,014	[1]	1,272,981
Balance (in shares) at Mar. 31, 2014				45,934,521
Balance at Dec. 31, 2014		4,051,734		51	1,120,350	1,649,967		42,704	2,813,072	[1]	1,238,662
Balance (in shares) at Dec. 31, 2014				50,924,925
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)				142,991
Common stock issued under employee benefit plans, net of restricted stock cancellations		6,595			6,595				6,595
Common stock issued under ESOP (in shares)				27,425
Common stock issued under ESOP		3,512			3,512				3,512
Income tax benefit from stock options exercised, vesting of restricted stock and other		2,514			2,514				2,514
Net income		145,282	[2]			88,516			88,516		56,766
Capital calls and distributions, net		10,166									10,166
Net change in unrealized gains and losses on available-for-sale securities, net of tax		50,344						50,344	50,344
Amortization of unrealized gains on securities transferred from available-for-sale to held-to-maturity, net of tax		(1,689)						(1,689)	(1,689)
Foreign currency translation adjustments, net of tax		1,309						1,309	1,309
Share-based compensation expense		7,464			7,464				7,464
Balance at Mar. 31, 2015		$ 4,277,231		$ 51	$ 1,140,435	$ 1,738,483		$ 92,668	$ 2,971,637		$ 1,305,594
Balance (in shares) at Mar. 31, 2015				51,095,341

[1] Prior period amounts have been revised to reflect the retrospective application of new accounting guidance adopted in the first quarter of 2015 related to our investments in qualified affordable housing projects (ASU 2014-01). See Note 1 - "Basis of Presentation" of the "Notes to Interim Consolidated Financial Statements" under Part I, Item 1 in this report.

[2] Cash flows for the quarters ended March 31, 2015 and March 31, 2014 were revised to reflect the retrospective application of our adoption of ASU 2014-01.