Note 2 - Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Net income – basic and diluted $ 3,289 $ 3,404 $ 2,859 $ 2,055 $ 2,672 $ 3,002 $ 1,733 $ 1,085 $ 11,607 $ 8,492 $ 4,893 $ 4,893
Basic weighted average shares outstanding (in shares)                 9,125,167 6,773,135 5,102,058 5,102,058
Effect of dilutive non-vested restricted shares and units (in shares)                 213,907 332,014   326,660
Effect of issuable shares related to acquisitions (in shares)                 80,779 12,759   30,666
Effect of warrants (in shares)                 120,198 97,990   132,626
Diluted weighted average shares outstanding (in shares)                 9,540,051 7,215,898 5,592,010 5,592,010