Schedule - Mortgage Loans on Real Estate - SBA 7 (a) Loans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mortgage Loans on Real Estate [Line Items]
Size of loans	$ 57,106	$ 55,387	$ 39,524
SBA 7(a) Loans [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans	183
Carrying Amount of Mortgages	68,531
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | Government guaranteed portions [Member]
Mortgage Loans on Real Estate [Line Items]
Carrying Amount of Mortgages	190
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | Secured borrowings [Member]
Mortgage Loans on Real Estate [Line Items]
Carrying Amount of Mortgages	37,403
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | Other [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans	47
Interest rate	5.25%
Final maturity date Start	Jan. 31, 2015
Final Maturity Date End	Sep. 13, 2037
Carrying Amount of Mortgages	4,185
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | MICHIGAN
Mortgage Loans on Real Estate [Line Items]
Number of loans	23
Final maturity date Start	Dec. 28, 2017
Final Maturity Date End	Nov. 27, 2038
Carrying Amount of Mortgages	5,256
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | TEXAS
Mortgage Loans on Real Estate [Line Items]
Number of loans	32
Final maturity date Start	Apr. 26, 2014
Final Maturity Date End	Oct. 31, 2038
Carrying Amount of Mortgages	3,660
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | OHIO
Mortgage Loans on Real Estate [Line Items]
Number of loans	17
Final maturity date Start	Oct. 16, 2020
Final Maturity Date End	Aug. 12, 2038
Carrying Amount of Mortgages	3,957
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | NORTH CAROLINA
Mortgage Loans on Real Estate [Line Items]
Number of loans	6
Final maturity date Start	Sep. 08, 2032
Final Maturity Date End	May 06, 2038
Carrying Amount of Mortgages	1,767
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | VIRGINIA
Mortgage Loans on Real Estate [Line Items]
Number of loans	7
Final maturity date Start	Sep. 06, 2036
Final Maturity Date End	Nov. 21, 2038
Carrying Amount of Mortgages	1,605
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | FLORIDA
Mortgage Loans on Real Estate [Line Items]
Number of loans	8
Final maturity date Start	Jun. 19, 2019
Final Maturity Date End	Nov. 07, 2038
Carrying Amount of Mortgages	1,434
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | INDIANA
Mortgage Loans on Real Estate [Line Items]
Number of loans	9
Final maturity date Start	Nov. 19, 2019
Final Maturity Date End	Aug. 30, 2037
Carrying Amount of Mortgages	1,430
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | WISCONSIN
Mortgage Loans on Real Estate [Line Items]
Number of loans	7
Final maturity date Start	Apr. 23, 2020
Final Maturity Date End	Jul. 17, 2038
Carrying Amount of Mortgages	1,377
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | ILLINOIS
Mortgage Loans on Real Estate [Line Items]
Number of loans	5
Final maturity date Start	Mar. 26, 2019
Final Maturity Date End	Sep. 18, 2037
Carrying Amount of Mortgages	1,175
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | KENTUCKY
Mortgage Loans on Real Estate [Line Items]
Number of loans	5
Final maturity date Start	Apr. 09, 2035
Final Maturity Date End	Dec. 27, 2037
Carrying Amount of Mortgages	1,043
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | MISSISSIPPI
Mortgage Loans on Real Estate [Line Items]
Number of loans	3
Final maturity date Start	May 18, 2035
Final Maturity Date End	Nov. 04, 2036
Carrying Amount of Mortgages	999
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | ALABAMA
Mortgage Loans on Real Estate [Line Items]
Number of loans	4
Final maturity date Start	Jul. 27, 2025
Final Maturity Date End	Aug. 25, 2036
Carrying Amount of Mortgages	916
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | IOWA
Mortgage Loans on Real Estate [Line Items]
Number of loans	4
Final maturity date Start	Dec. 22, 2035
Final Maturity Date End	May 21, 2038
Carrying Amount of Mortgages	896
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | CONNECTICUT
Mortgage Loans on Real Estate [Line Items]
Number of loans	2
Final maturity date Start	Dec. 05, 2014
Final Maturity Date End	Nov. 30, 2036
Carrying Amount of Mortgages	620
Principal amount of loan subject to delinquent principal or "interest"
SBA 7(a) Loans [Member] | ARIZONA
Mortgage Loans on Real Estate [Line Items]
Number of loans	4
Final maturity date Start	Jan. 12, 2033
Final Maturity Date End	Apr. 28, 2036
Carrying Amount of Mortgages	618
Principal amount of loan subject to delinquent principal or "interest"
Minimum [Member] | SBA 7(a) Loans [Member] | Other [Member]
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	4.75%
Minimum [Member] | SBA 7(a) Loans [Member] | MICHIGAN
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.25%
Minimum [Member] | SBA 7(a) Loans [Member] | TEXAS
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	4.13%
Minimum [Member] | SBA 7(a) Loans [Member] | OHIO
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.25%
Minimum [Member] | SBA 7(a) Loans [Member] | NORTH CAROLINA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Minimum [Member] | SBA 7(a) Loans [Member] | VIRGINIA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Minimum [Member] | SBA 7(a) Loans [Member] | FLORIDA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Minimum [Member] | SBA 7(a) Loans [Member] | INDIANA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	4.75%
Minimum [Member] | SBA 7(a) Loans [Member] | WISCONSIN
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.00%
Minimum [Member] | SBA 7(a) Loans [Member] | ILLINOIS
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Minimum [Member] | SBA 7(a) Loans [Member] | KENTUCKY
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Minimum [Member] | SBA 7(a) Loans [Member] | MISSISSIPPI
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Minimum [Member] | SBA 7(a) Loans [Member] | ALABAMA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.00%
Minimum [Member] | SBA 7(a) Loans [Member] | IOWA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Minimum [Member] | SBA 7(a) Loans [Member] | CONNECTICUT
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.13%
Minimum [Member] | SBA 7(a) Loans [Member] | ARIZONA
Mortgage Loans on Real Estate [Line Items]
Size of loans	0
Interest rate	5.75%
Maximum [Member] | SBA 7(a) Loans [Member] | Other [Member]
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | MICHIGAN
Mortgage Loans on Real Estate [Line Items]
Size of loans	1,000
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | TEXAS
Mortgage Loans on Real Estate [Line Items]
Size of loans	1,000
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | OHIO
Mortgage Loans on Real Estate [Line Items]
Size of loans	1,000
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | NORTH CAROLINA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | VIRGINIA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | FLORIDA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | INDIANA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | WISCONSIN
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | ILLINOIS
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | KENTUCKY
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | MISSISSIPPI
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | ALABAMA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | IOWA
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	6.00%
Maximum [Member] | SBA 7(a) Loans [Member] | CONNECTICUT
Mortgage Loans on Real Estate [Line Items]
Size of loans	500
Interest rate	5.63%
Maximum [Member] | SBA 7(a) Loans [Member] | ARIZONA
Mortgage Loans on Real Estate [Line Items]
Size of loans	$ 500
Interest rate	6.00%