Borrowed Funds and Debt Obligations - Notes Payable (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2014 |
Sep. 30, 2015 |
|
| Debt Instrument [Line Items] | ||
| Notes payable | $ 10,250 | $ 0 |
| Secured debt | ||
| Debt Instrument [Line Items] | ||
| Notes payable | 10,250 | |
| Subordinated debt | London Interbank Offered Rate (LIBOR) | ||
| Debt Instrument [Line Items] | ||
| Notes payable | $ 10,000 | 0 |
| Interest due, rate | 2.95% | |
| Interest rate at period end | 3.19% | |
| Equity securities | Secured debt | London Interbank Offered Rate (LIBOR) | ||
| Debt Instrument [Line Items] | ||
| Notes payable | $ 250 | $ 0 |
| Interest due, rate | 2.95% | |
| 100% of Centrue Bank Stock pledged | 100.00% | |
| Equity securities | Secured debt | Floor | ||
| Debt Instrument [Line Items] | ||
| Interest due, rate | 6.50% |