Note 4 - Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Balance, beginning of year | $ 51,893 | $ 43,419 | $ 35,629 |
| Loans charged off | (16,332) | (5,198) | (5,744) |
| Recoveries | (620) | (274) | (687) |
| Provision for loan losses | (23,225) | (13,398) | (12,847) |
| Balance, end of year | $ 59,406 | $ 51,893 | $ 43,419 |
| X | ||||||||||
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of expense related to loss from loan transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|