Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Condensed Consolidated Balance Sheets
Allowance of loan loss	$ 25,349	$ 24,778
Accumulated amortization	$ 14,185	$ 13,930
Preferred stock par value	$ 0.01	$ 0.01
Preferred stock shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock par value	$ 0.01	$ 0.01
Common stock shares authorized	90,000,000	90,000,000
Common stock, shares issued	25,731,504	25,731,504
Common stock, shares outstanding	24,833,232	24,833,232
Treasury stock, shares	898,272	898,272
Accumulated other comprehensive loss, tax	$ 874	$ 104