Summary of Significant Accounting and Reporting Policies (Details) (USD $)
|
3 Months Ended | 9 Months Ended | 9 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2013
|
Sep. 30, 2013
|
Sep. 30, 2014
item
|
Sep. 30, 2014
SWS
|
Sep. 30, 2014
Plains Capital
|
Sep. 30, 2014
Bank
|
Sep. 13, 2013
Bank
FNB
|
Dec. 31, 2013
Bank
FNB
|
Sep. 30, 2013
Bank
FNB
|
Sep. 30, 2013
Bank
FNB
|
Sep. 13, 2013
Bank
FNB
Covered loans
|
Sep. 13, 2013
Bank
FNB
Non-covered loans
|
Sep. 30, 2014
Plains Capital Equity, LLC
|
Sep. 30, 2014
PrimeLending
|
Sep. 30, 2014
PCB-ARC, Inc.
|
Sep. 30, 2014
FSC
|
Sep. 30, 2014
PlainsCapital Securities, LLC
|
Sep. 30, 2014
NLC
|
Sep. 30, 2014
PrimeLending Ventures Management, LLC
|
Sep. 30, 2014
Trusts
|
Sep. 30, 2014
RGV-ARC, Inc
|
|
Basis of Presentation | |||||||||||||||||||||
Number of primary operating business units | 2 | ||||||||||||||||||||
Fair value of assets acquired | $ 2,200,000,000 | ||||||||||||||||||||
Loans | 1,100,000,000 | 42,900,000 | |||||||||||||||||||
Securities | 286,200,000 | ||||||||||||||||||||
Other real estate owned | 135,200,000 | ||||||||||||||||||||
Assumed liabilities | 2,200,000,000 | ||||||||||||||||||||
Number of shares of acquiree that stockholders received for each share of common stock owned | 0.2496 | ||||||||||||||||||||
Cash consideration per share of the merged entity (in dollars per share) | $ 1.94 | ||||||||||||||||||||
Acquisition price (in dollars per share) | $ 6.94 | ||||||||||||||||||||
Bargain purchase gain | 12,585,000 | 12,585,000 | 3,300,000 | 12,600,000 | |||||||||||||||||
Income taxes on bargain purchase gain | 1,200,000 | 4,500,000 | |||||||||||||||||||
Net income resulting from adjustments to preliminary fair values of the transaction | $ 6,300,000 | $ 6,300,000 | |||||||||||||||||||
Ownership percentage of subsidiary owned by the reporting entity | 100.00% | 100.00% | |||||||||||||||||||
Ownership percentage of subsidiary owned by subsidiary of the reporting entity | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |