Time Deposits and Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Time deposits
Within One Year	$ 948,251
One to Two Years	115,197
Two to Three Years	52,074
Three to Four Years	24,669
Four to Five Years	495
After Five Years	0
Total	1,140,686	$ 1,239,746
Fed funds purchased & repurchase agreements	13,531	14,921
FHLB borrowings
Within One Year	59,500
One to Two Years	21,500
Two to Three Years	35,000
Three to Four Years	0
Four to Five Years	5,100
After Five Years	215,000
Total	336,100	$ 358,743
Trust preferred securities
Within One Year	0
One to Two Years	0
Two to Three Years	0
Three to Four Years	0
Four to Five Years	0
After Five Years	952
Total	952
Total
Within One Year	1,021,282
One to Two Years	136,697
Two to Three Years	87,074
Three to Four Years	24,669
Four to Five Years	5,595
After Five Years	215,952
Total	1,491,269
Contract value	$ 2,600