Loans (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Changes in allowance for loan losses
Beginning balance			$ 48,012
Ending Balance	47,773		48,012
Amount allocated to:
Ending Balance	47,773		48,012
Loans:
Ending Balance	2,029,847		2,033,107
Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	32,579	39,037
Provision for loan loss	1,055	5,057
Charged-off	(1,438)	(9,998)
Recoveries	528	764
Ending Balance	32,724	34,860
Amount allocated to:
Loans individually evaluated for impairment	2,516		1,039
Loans collectively evaluated for impairment	30,208		31,540
Ending Balance	32,724	34,860
Loans:
Loans individually evaluated for impairment	31,338		32,377
Loans collectively evaluated for impairment	1,715,879		1,725,548
Ending Balance	1,747,217		1,757,925
Florida
Changes in allowance for loan losses
Beginning balance	15,433	19,469
Provision for loan loss	945	(57)
Charged-off	(1,460)	(1,089)
Recoveries	131	652
Ending Balance	15,049	18,975
Amount allocated to:
Loans individually evaluated for impairment	25		718
Loans collectively evaluated for impairment	15,024		14,715
Ending Balance	15,049	18,975
Loans:
Loans individually evaluated for impairment	20,139		23,216
Loans collectively evaluated for impairment	262,491		251,966
Ending Balance	282,630		275,182
Commercial \| Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	6,597	9,143
Provision for loan loss	238	(1,973)
Charged-off	(183)	(279)
Recoveries	15	91
Ending Balance	6,667	6,982
Amount allocated to:
Loans individually evaluated for impairment	589		265
Loans collectively evaluated for impairment	6,078		6,332
Ending Balance	6,667	6,982
Loans:
Loans individually evaluated for impairment	5,194		7,479
Loans collectively evaluated for impairment	408,769		415,348
Ending Balance	413,963		422,827
Commercial \| Florida
Changes in allowance for loan losses
Beginning balance	1,437	1,939
Provision for loan loss	23	(563)
Charged-off		(40)
Recoveries	25	405
Ending Balance	1,485	1,741
Amount allocated to:
Loans collectively evaluated for impairment	1,485		1,437
Ending Balance	1,485	1,741
Loans:
Loans collectively evaluated for impairment	11,959		10,861
Ending Balance	11,959		10,861
Commercial Real Estate \| Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	15,023	18,605
Provision for loan loss	490	7,660
Charged-off	(847)	(8,424)
Recoveries	125	269
Ending Balance	14,791	18,110
Amount allocated to:
Loans individually evaluated for impairment	847		634
Loans collectively evaluated for impairment	13,944		14,389
Ending Balance	14,791	18,110
Loans:
Loans individually evaluated for impairment	12,060		13,308
Loans collectively evaluated for impairment	833,408		829,654
Ending Balance	845,468		842,962
Commercial Real Estate \| Florida
Changes in allowance for loan losses
Beginning balance	6,062	8,413
Provision for loan loss	270	45
Charged-off	(245)	(216)
Recoveries	19	35
Ending Balance	6,106	8,277
Amount allocated to:
Loans individually evaluated for impairment			235
Loans collectively evaluated for impairment	6,106		5,827
Ending Balance	6,106	8,277
Loans:
Loans individually evaluated for impairment	5,770		6,573
Loans collectively evaluated for impairment	141,731		131,597
Ending Balance	147,501		138,170
Real Estate Construction \| Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	2,527	4,352
Provision for loan loss	737	(317)
Charged-off		(288)
Recoveries	182	162
Ending Balance	3,446	3,909
Amount allocated to:
Loans individually evaluated for impairment	1,050
Loans collectively evaluated for impairment	2,396		2,527
Ending Balance	3,446	3,909
Loans:
Loans individually evaluated for impairment	8,746		6,394
Loans collectively evaluated for impairment	63,392		63,735
Ending Balance	72,138		70,129
Real Estate Construction \| Florida
Changes in allowance for loan losses
Beginning balance	2,315	2,936
Provision for loan loss	29	(400)
Charged-off	(35)	(69)
Recoveries	17	73
Ending Balance	2,326	2,540
Amount allocated to:
Loans collectively evaluated for impairment	2,326		2,315
Ending Balance	2,326	2,540
Loans:
Loans individually evaluated for impairment	2,593		2,597
Loans collectively evaluated for impairment	14,447		13,375
Ending Balance	17,040		15,972
Retail Real Estate \| Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	8,110	6,473
Provision for loan loss	(404)	(262)
Charged-off	(272)	(861)
Recoveries	28	164
Ending Balance	7,462	5,514
Amount allocated to:
Loans individually evaluated for impairment	30		140
Loans collectively evaluated for impairment	7,432		7,970
Ending Balance	7,462	5,514
Loans:
Loans individually evaluated for impairment	5,338		5,196
Loans collectively evaluated for impairment	397,524		404,867
Ending Balance	402,862		410,063
Retail Real Estate \| Florida
Changes in allowance for loan losses
Beginning balance	5,614	6,160
Provision for loan loss	629	877
Charged-off	(1,178)	(764)
Recoveries	63	132
Ending Balance	5,128	6,405
Amount allocated to:
Loans individually evaluated for impairment	25		483
Loans collectively evaluated for impairment	5,103		5,131
Ending Balance	5,128	6,405
Loans:
Loans individually evaluated for impairment	11,776		14,046
Loans collectively evaluated for impairment	93,956		95,724
Ending Balance	105,732		109,770
Retail Other \| Illinois/Indiana
Changes in allowance for loan losses
Beginning balance	322	464
Provision for loan loss	(6)	(51)
Charged-off	(136)	(146)
Recoveries	178	78
Ending Balance	358	345
Amount allocated to:
Loans collectively evaluated for impairment	358		322
Ending Balance	358	345
Loans:
Loans collectively evaluated for impairment	12,786		11,944
Ending Balance	12,786		11,944
Retail Other \| Florida
Changes in allowance for loan losses
Beginning balance	5	21
Provision for loan loss	(6)	(16)
Charged-off	(2)
Recoveries	7	7
Ending Balance	4	12
Amount allocated to:
Loans collectively evaluated for impairment	4		5
Ending Balance	4	12
Loans:
Loans collectively evaluated for impairment	398		409
Ending Balance	$ 398		$ 409

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Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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-Publisher FASB

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-Paragraph 20

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Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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