XML 33 R81.htm IDEA: XBRL DOCUMENT

Trust Preferred Securities and Subordinated Debentures (Schedule of Trust Preferred Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Subordinated Borrowing [Line Items]
Subordinated debentures	$ 46,393us-gaap_SubordinatedDebt	$ 46,393us-gaap_SubordinatedDebt
Trust Preferred Securities of the Trusts	45,000oksb_TrustPreferredSecurities	45,000oksb_TrustPreferredSecurities
OKSB Statutory Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures	20,619	20,619
Trust Preferred Securities of the Trusts	20,000	20,000
Rates	3.35%	3.35%
Final Maturity Date	Jun. 26, 2033	Jun. 26, 2033
SBI Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures	25,774	25,774
Trust Preferred Securities of the Trusts	25,000	25,000
Rates	3.08%	3.09%
Final Maturity Date	Oct. 07, 2033	Oct. 07, 2033
Southwest Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Trust Preferred Securities of the Trusts	$ 34,500

Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

+ References+ Details