Loans (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Grades 1,3,6
Loans
Loans receivable	$ 1,594,150,000	$ 1,502,126,000
Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	1,419,453,000	1,332,442,000
Grades 1,3,6 | Florida
Loans
Loans receivable	174,697,000	169,684,000
Grade 7
Loans
Loans receivable	209,424,000	184,567,000
Grade 7 | Illinois/Indiana
Loans
Loans receivable	171,123,000	156,374,000
Grade 7 | Florida
Loans
Loans receivable	38,301,000	28,193,000
Grade 8
Loans
Limit above which loans are quarterly reviewed	500,000
Loans receivable	114,462,000	186,584,000
Grade 8 | Illinois/Indiana
Loans
Loans receivable	84,647,000	135,292,000
Grade 8 | Florida
Loans
Loans receivable	29,815,000	51,292,000
Grade 9
Loans
Loans receivable	88,581,000	118,569,000
Grade 9 | Illinois/Indiana
Loans
Loans receivable	64,299,000	95,864,000
Grade 9 | Florida
Loans
Loans receivable	24,282,000	22,705,000
Grade 10
Loans
Loans receivable	25,104,000	38,340,000
Grade 10 | Illinois/Indiana
Loans
Loans receivable	17,553,000	27,575,000
Grade 10 | Florida
Loans
Loans receivable	7,551,000	10,765,000
Grades 1, 3, 6 and 7
Loans
Loans receivable	1,800,000,000	1,700,000,000
Increase or decrease in loans receivable	116,900,000
Grades 8, 9, and 10
Loans
Loans receivable	228,100,000	343,500,000
Increase or decrease in loans receivable	(115,400,000)
Commercial | Illinois/Indiana
Loans
Weighted Avg. Risk Grade	4.68	5.12
Commercial | Florida
Loans
Weighted Avg. Risk Grade	5.91	6.32
Commercial | Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	346,536,000	298,332,000
Commercial | Grades 1,3,6 | Florida
Loans
Loans receivable	6,359,000	5,471,000
Commercial | Grade 7
Loans
Limit above which loans are annually reviewed	500,000
Commercial | Grade 7 | Illinois/Indiana
Loans
Loans receivable	46,201,000	43,566,000
Commercial | Grade 7 | Florida
Loans
Loans receivable	3,544,000	4,329,000
Commercial | Grade 8 | Illinois/Indiana
Loans
Loans receivable	12,374,000	28,172,000
Commercial | Grade 8 | Florida
Loans
Loans receivable	162,000	191,000
Commercial | Grade 9 | Illinois/Indiana
Loans
Loans receivable	15,677,000	17,884,000
Commercial | Grade 9 | Florida
Loans
Loans receivable	796,000	271,000
Commercial | Grade 10 | Illinois/Indiana
Loans
Loans receivable	2,039,000	9,071,000
Commercial | Grade 10 | Florida
Loans
Loans receivable		568,000
Commercial real estate | Illinois/Indiana
Loans
Weighted Avg. Risk Grade	5.53	5.75
Commercial real estate | Florida
Loans
Weighted Avg. Risk Grade	6.36	6.44
Commercial real estate | Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	644,695,000	617,247,000
Commercial real estate | Grades 1,3,6 | Florida
Loans
Loans receivable	80,232,000	73,021,000
Commercial real estate | Grade 7
Loans
Limit above which loans are quarterly reviewed	500,000
Commercial real estate | Grade 7 | Illinois/Indiana
Loans
Loans receivable	110,012,000	95,553,000
Commercial real estate | Grade 7 | Florida
Loans
Loans receivable	20,667,000	21,296,000
Commercial real estate | Grade 8 | Illinois/Indiana
Loans
Loans receivable	50,305,000	69,185,000
Commercial real estate | Grade 8 | Florida
Loans
Loans receivable	13,238,000	18,677,000
Commercial real estate | Grade 9 | Illinois/Indiana
Loans
Loans receivable	28,655,000	54,670,000
Commercial real estate | Grade 9 | Florida
Loans
Loans receivable	19,279,000	17,124,000
Commercial real estate | Grade 10 | Illinois/Indiana
Loans
Loans receivable	9,295,000	8,201,000
Commercial real estate | Grade 10 | Florida
Loans
Loans receivable	4,754,000	5,242,000
Real estate construction
Loans
Limit above which loans are annually reviewed	500,000
Real estate construction | Illinois/Indiana
Loans
Weighted Avg. Risk Grade	7.21	7.65
Real estate construction | Florida
Loans
Weighted Avg. Risk Grade	6.97	7.97
Real estate construction | Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	30,710,000	22,002,000
Real estate construction | Grades 1,3,6 | Florida
Loans
Loans receivable	4,137,000	1,417,000
Real estate construction | Grade 7 | Illinois/Indiana
Loans
Loans receivable	7,809,000	7,998,000
Real estate construction | Grade 7 | Florida
Loans
Loans receivable	7,721,000	341,000
Real estate construction | Grade 8 | Illinois/Indiana
Loans
Loans receivable	14,162,000	34,374,000
Real estate construction | Grade 8 | Florida
Loans
Loans receivable	3,172,000	12,352,000
Real estate construction | Grade 9 | Illinois/Indiana
Loans
Loans receivable	14,084,000	18,841,000
Real estate construction | Grade 9 | Florida
Loans
Loans receivable	942,000	840,000
Real estate construction | Grade 10 | Illinois/Indiana
Loans
Loans receivable	3,364,000	5,464,000
Real estate construction | Grade 10 | Florida
Loans
Loans receivable		1,236,000
Retail real estate | Illinois/Indiana
Loans
Weighted Avg. Risk Grade	3.62	3.67
Retail real estate | Florida
Loans
Weighted Avg. Risk Grade	3.98	4.14
Retail real estate | Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	385,949,000	378,355,000
Retail real estate | Grades 1,3,6 | Florida
Loans
Loans receivable	83,578,000	89,195,000
Retail real estate | Grade 7 | Illinois/Indiana
Loans
Loans receivable	6,729,000	8,581,000
Retail real estate | Grade 7 | Florida
Loans
Loans receivable	6,369,000	2,227,000
Retail real estate | Grade 8 | Illinois/Indiana
Loans
Loans receivable	7,806,000	3,561,000
Retail real estate | Grade 8 | Florida
Loans
Loans receivable	13,225,000	20,071,000
Retail real estate | Grade 9 | Illinois/Indiana
Loans
Loans receivable	5,874,000	4,041,000
Retail real estate | Grade 9 | Florida
Loans
Loans receivable	3,265,000	4,470,000
Retail real estate | Grade 10 | Illinois/Indiana
Loans
Loans receivable	2,855,000	4,768,000
Retail real estate | Grade 10 | Florida
Loans
Loans receivable	2,797,000	3,719,000
Retail other | Illinois/Indiana
Loans
Weighted Avg. Risk Grade	3.34	3.17
Retail other | Florida
Loans
Weighted Avg. Risk Grade	2.80	2.41
Retail other | Grades 1,3,6 | Illinois/Indiana
Loans
Loans receivable	11,563,000	16,506,000
Retail other | Grades 1,3,6 | Florida
Loans
Loans receivable	391,000	580,000
Retail other | Grade 7 | Illinois/Indiana
Loans
Loans receivable	372,000	676,000
Retail other | Grade 8 | Florida
Loans
Loans receivable	18,000	1,000
Retail other | Grade 9 | Illinois/Indiana
Loans
Loans receivable	9,000	428,000
Retail other | Grade 10 | Illinois/Indiana
Loans
Loans receivable		$ 71,000