XML 52 R42.htm IDEA: XBRL DOCUMENT v3.10.0.1
Acquisitions - Pro Forma Financial Information (Details) - Arlington Bank and IAB
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
$ / shares
Business Acquisition [Line Items]  
Total revenue (net interest income plus other income) | $ $ 380,324
Net income | $ $ 95,009
Basic (in dollars per share) | $ / shares $ 1.94
Diluted (in dollars per share) | $ / shares $ 1.93