XML 49 R37.htm IDEA: XBRL DOCUMENT v3.7.0.1
Securities (Details 3) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Amortized Cost    
Total $ 1,432,013 $ 1,441,724
Fair Value    
Total 1,423,952 1,428,617
Total debt securities    
Amortized Cost    
Due in one year or less 38,168 17,878
Due after one year through five years 403,122 376,777
Due after five years through ten years 162,335 210,985
Due after ten years 17,760 13,827
Total 621,385 619,467
Fair Value    
Due in one year or less 38,336 18,034
Due in one year or less 405,059 378,631
Due after five years through ten years 162,211 208,999
Due after ten years 17,381 13,181
Total 622,987 618,845
Mortgage-backed securities    
Amortized Cost    
Total 810,628 822,257
Fair Value    
Total $ 800,965 $ 809,772