Note 6 - FDIC Loss Share Agreements (Details Textual) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Aug. 26, 2016
USD ($)
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2016
USD ($)
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
|
| Loans and Leases Receivable, Gross, Carrying Amount, Covered | $ 0 | $ 17,651 | ||||
| Other Real Estate, Covered | $ 0 | 1,240 | $ 3,011 | |||
| After Tax Charge Resulted from Early Termination under the FDIC Loss Share Agreements | $ 15 | |||||
| Reclassification of Loans and Leases Receivable from Covered to Non-covered | $ 15,100 | |||||
| Reclassification of Other Real Estate Owned from Covered to Non-covered | $ 380 | |||||
| FDIC Indemnification Asset True Up Amount | $ 5,700 | |||||
| Bank [Member] | ||||||
| Payments for Early Termination under the FDIC Loss Share Agreements | $ 4,400 | |||||
| Citizens South Banking Corporation [Member] | ||||||
| Number of Purchase and Assumption Agreeements | 2 | |||||
| Loans and Leases Receivable, Gross, Carrying Amount, Covered | $ 17,700 | |||||
| Other Real Estate, Covered | $ 1,200 |