Loans (Details 4) (USD $)
12 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2013
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Dec. 31, 2014
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Loans        
Unpaid Contractual Principal Balance $ 30,124,000 $ 40,077,000 40,077,000 $ 30,124,000
Recorded Investment with No Allowance 21,289,000 24,282,000 24,282,000 21,289,000
Recorded Investment with Allowance 5,297,000 9,778,000 9,778,000 5,297,000
Total Recorded Investment 26,586,000 34,060,000 34,060,000 26,586,000
Related Allowance 3,168,000 4,287,000 4,287,000 3,168,000
Average Recorded Investment 28,668,000 44,724,000    
Minimum days past due for TDR loans to be classified as non-performing 90 days      
Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 9,799,000 22,206,000 22,206,000 9,799,000
Recorded Investment with No Allowance 4,927,000 10,914,000 10,914,000 4,927,000
Recorded Investment with Allowance 3,666,000 7,922,000 7,922,000 3,666,000
Total Recorded Investment 8,593,000 18,836,000 18,836,000 8,593,000
Related Allowance 2,641,000 3,534,000 3,534,000 2,641,000
Average Recorded Investment 13,284,000 25,689,000    
Florida        
Loans        
Unpaid Contractual Principal Balance 20,325,000 17,871,000 17,871,000 20,325,000
Recorded Investment with No Allowance 16,362,000 13,368,000 13,368,000 16,362,000
Recorded Investment with Allowance 1,631,000 1,856,000 1,856,000 1,631,000
Total Recorded Investment 17,993,000 15,224,000 15,224,000 17,993,000
Related Allowance 527,000 753,000 753,000 527,000
Average Recorded Investment 15,384,000 19,035,000    
Included in non-performing loans        
Loans        
Number of contracts     0  
Commercial | Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 2,944,000 2,825,000 2,825,000 2,944,000
Recorded Investment with No Allowance 1,376,000 1,684,000 1,684,000 1,376,000
Recorded Investment with Allowance 741,000 602,000 602,000 741,000
Total Recorded Investment 2,117,000 2,286,000 2,286,000 2,117,000
Related Allowance 595,000 485,000 485,000 595,000
Average Recorded Investment 2,479,000 4,169,000    
Commercial | Florida        
Loans        
Unpaid Contractual Principal Balance 2,742,000     2,742,000
Recorded Investment with No Allowance 1,642,000     1,642,000
Total Recorded Investment 1,642,000     1,642,000
Average Recorded Investment 330,000      
Commercial | In compliance with modified terms | Illinois/Indiana        
Loans        
Number of modifications for short-term principal payment relief   1 1  
Recorded investment for short-term principal payment relief   100,000 100,000  
Commercial real estate | Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 4,007,000 8,866,000 8,866,000 4,007,000
Recorded Investment with No Allowance 1,140,000 3,671,000 3,671,000 1,140,000
Recorded Investment with Allowance 2,854,000 3,740,000 3,740,000 2,854,000
Total Recorded Investment 3,994,000 7,411,000 7,411,000 3,994,000
Related Allowance 1,975,000 1,977,000 1,977,000 1,975,000
Average Recorded Investment 5,473,000 10,335,000    
Commercial real estate | Florida        
Loans        
Unpaid Contractual Principal Balance 5,775,000 7,108,000 7,108,000 5,775,000
Recorded Investment with No Allowance 4,414,000 3,946,000 3,946,000 4,414,000
Recorded Investment with Allowance 1,274,000 1,319,000 1,319,000 1,274,000
Total Recorded Investment 5,688,000 5,265,000 5,265,000 5,688,000
Related Allowance 370,000 416,000 416,000 370,000
Average Recorded Investment 5,032,000 6,662,000    
Commercial real estate | In compliance with modified terms | Illinois/Indiana        
Loans        
Number of modifications for short-term principal payment relief   1    
Recorded investment for short-term principal payment relief   200,000 200,000  
Commercial real estate | In compliance with modified terms | Florida        
Loans        
Number of modifications for short-term principal payment relief 1     1
Recorded investment for short-term principal payment relief 2,000,000     2,000,000
Number of modifications for short-term interest-rate relief   1    
Recorded investment for short-term interest-rate relief   100,000    
Commercial real estate | Included in non-performing loans | Illinois/Indiana        
Loans        
Number of contracts 1 1    
Recorded Investment 300,000 1,700,000    
Real estate construction | Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 46,000 4,932,000 4,932,000 46,000
Recorded Investment with No Allowance   2,292,000 2,292,000  
Recorded Investment with Allowance 46,000 1,570,000 1,570,000 46,000
Total Recorded Investment 46,000 3,862,000 3,862,000 46,000
Related Allowance 46,000 468,000 468,000 46,000
Average Recorded Investment 2,269,000 5,889,000    
Real estate construction | Florida        
Loans        
Unpaid Contractual Principal Balance 620,000 417,000 417,000 620,000
Recorded Investment with No Allowance 551,000 417,000 417,000 551,000
Total Recorded Investment 551,000 417,000 417,000 551,000
Average Recorded Investment 485,000 1,294,000    
Real estate construction | Included in non-performing loans | Illinois/Indiana        
Loans        
Number of contracts   1    
Recorded Investment   200,000    
Retail real estate | Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 2,794,000 5,583,000 5,583,000 2,794,000
Recorded Investment with No Allowance 2,403,000 3,267,000 3,267,000 2,403,000
Recorded Investment with Allowance 25,000 2,010,000 2,010,000 25,000
Total Recorded Investment 2,428,000 5,277,000 5,277,000 2,428,000
Related Allowance 25,000 604,000 604,000 25,000
Average Recorded Investment 3,061,000 5,296,000    
Retail real estate | Florida        
Loans        
Unpaid Contractual Principal Balance 11,181,000 10,346,000 10,346,000 11,181,000
Recorded Investment with No Allowance 9,755,000 9,005,000 9,005,000 9,755,000
Recorded Investment with Allowance 350,000 537,000 537,000 350,000
Total Recorded Investment 10,105,000 9,542,000 9,542,000 10,105,000
Related Allowance 150,000 337,000 337,000 150,000
Average Recorded Investment 9,532,000 11,079,000    
Retail real estate | Included in non-performing loans | Illinois/Indiana        
Loans        
Number of contracts   1    
Recorded Investment   500,000    
Retail other | Illinois/Indiana        
Loans        
Unpaid Contractual Principal Balance 8,000     8,000
Recorded Investment with No Allowance 8,000     8,000
Total Recorded Investment 8,000     8,000
Average Recorded Investment 2,000      
Retail other | Florida        
Loans        
Unpaid Contractual Principal Balance 7,000     7,000
Recorded Investment with Allowance 7,000     7,000
Total Recorded Investment 7,000     7,000
Related Allowance 7,000     7,000
Average Recorded Investment $ 5,000