Fair Value Disclosures (Quantitative Information about Level 3 Fair Value Measurements) (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2014		Dec. 31, 2013
Other Structured Financial Products [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value	$ 11,995	[1]	$ 11,297	[1]
Valuation Technique(s)	Discounted Cash Flow	[1]	Discounted Cash Flow	[1]
Credit default rates, call options and deferrals, waterfall structure, and covenants.	Varies by individual security, refer to Note 2	[1]	Varies by individual security, refer to Note 2	[1]
Other Equity Securities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value	2,803		2,797
Valuation Technique(s)	Discounted Cash Flow		Discounted Cash Flow
Other Equity Securities [Member] | Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Price to book multiple	0.2		0.2
Other Equity Securities [Member] | Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Price to book multiple	1.4		1.5
Other Equity Securities [Member] | Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Price to book multiple	0.8		0.8
Impaired Loans [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value	35,975		54,216
Valuation Technique(s)	Discounted Cash Flow		Discounted Cash Flow
Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Cash flows based upon current discount rates and terminal value	0.60%		0.80%
Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Cash flows based upon current discount rates and terminal value	14.10%		8.00%
Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Cash flows based upon current discount rates and terminal value	3.60%		3.90%
Foreclosed Assets [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value	$ 10,302		$ 16,555
Valuation Technique(s)	Discounted Cash Flow		Discounted Cash Flow
Foreclosed Assets [Member] | Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Third party appraisals less estimated selling costs	0.00%		0.00%
Foreclosed Assets [Member] | Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Third party appraisals less estimated selling costs	100.00%		100.00%
Foreclosed Assets [Member] | Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Third party appraisals less estimated selling costs	32.70%		29.60%

[1] The significant unobservable inputs used in the fair value measurement of Susquehanna's other structured financial products are conditional repayment rate, loss severity, and conditional default rate. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and directionally opposite change in the assumption used for repayment rate.