Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2016

Short-term Debt [Line Items]

Summary Of Short-Term Borrowings

(In thousands)	2016			2015			2014
Federal funds purchased
Average amount outstanding	$	104,866		$	105,910		$	104,358
Average rate	0.29		%	0.18		%	0.17		%
Highest month-end balance	147,900			122,461			124,093
Year-end balance	105,563			111,263			100,193
Average rate on outstandings at year-end	0.51		%	0.25		%	0.15		%
Security repurchase agreements
Average amount outstanding	311,045			127,358			116,190
Average rate	0.23		%	0.11		%	0.06		%
Highest month-end balance	823,744			205,566			156,710
Year-end balance	196,385			205,566			118,600
Average rate on outstandings at year-end	0.26		%	0.15		%	0.13		%
Other short-term borrowings, year-end balances
Securities sold, not yet purchased	25,321			30,158			24,230
Other	500,000			—			1,200
Total federal funds and other short-term borrowings	$	827,269		$	346,987		$	244,223