Note 26 - Regulatory Capital Requirements (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jan. 01, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Shelf Registration Statement Maximum Amount of Securities Authorized for Issuance | $ 200,000 | ||
| Shelf Registration Shares After Amendment | 1,500,000 | ||
| Maximum Stock Issuable Under Stock Purchase and Dividend Reinvestment Plan | $ 120 | ||
| Stock Repurchased During Period, Shares | 862,500 | 286,700 | |
| Request for Waiver Value Approved in Period | $ 0 | ||
| Dividend Reinvestment and Share Purchase Plan [Member] | |||
| Stock Issued During Period, Shares, New Issues | 0 | ||
| Continental Bank Holdings, Inc. ("CBH") [Member] | |||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 3,878,383 | ||
| Business Acquisition, Equity Interest Issued or Issuable, Value Assigned | $ 121,400 | ||