Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 291,434	$ 277,042
Unrestricted short-term investments	38,662	39,550
Cash and cash equivalents	330,096	316,592
Interest-bearing deposits held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	4,304	4,423
Restricted short-term investments	68,020	75,203
Securities available for sale	2,400,626	2,577,901
Restricted investment in bank stocks	151,974	152,434
Loans and leases, net of deferred costs and fees	12,840,305	12,728,082
Loans held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	159,398	166,659
Less: Allowance for loan and lease losses	176,377	184,020
Net loans and leases	12,823,326	12,710,721
Premises and equipment, net	186,102	188,983
Other real estate and foreclosed assets	26,302	31,017
Accrued interest receivable	44,202	40,304
Bank-owned life insurance	450,351	450,270
Goodwill	1,275,439	1,270,359
Intangible assets with finite lives	38,209	41,332
Deferred Income Tax Assets	7,594	0
Other assets	160,629	178,128
Total Assets	17,967,174	18,037,667
Deposits [Abstract]
Noninterest-bearing	1,917,719	1,973,664
Interest-bearing	10,773,713	10,606,382
Total Deposits	12,691,432	12,580,046
Federal Home Loan Bank short-term borrowings	948,000	1,098,000
Other short-term borrowings	786,251	817,577
Federal Home Loan Bank long-term borrowings	96,480	101,062
Other long-term debt	251,019	251,021
Junior subordinated debentures	154,946	154,927
Long-term debt of consolidated variable interest entities for which creditors do not have recourse to Susquehanna's general credit	95,594	107,453
Accrued interest, taxes, and expenses payable	61,265	81,808
Deferred income tax liabilities	29,694	14,475
Other liabilities	213,004	235,389
Total Liabilities	15,327,685	15,441,758
Shareholders' equity:
Common stock, $2.00 par value, 400,000,000 shares authorized; Issued: 187,059,021 at March 31, 2013, and 186,811,642 at December 31, 2012	374,118	373,623
Treasury stock, at cost. 259,393 at March 31, 2013, and 257,556 at December 31, 2012	(1,871)	(1,850)
Additional paid-in capital	1,648,062	1,645,958
Retained earnings	657,835	615,436
Accumulated other comprehensive loss, net of taxes of $21,360 and $20,672, respectively	(38,655)	(37,258)
Total Shareholders' Equity	2,639,489	2,595,909
Total Liabilities and Shareholders' Equity	$ 17,967,174	$ 18,037,667