Borrowings (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

FHLBB Advances Maturity Summary

The following table presents scheduled maturities and weighted average interest rates on FHLBB advances outstanding as of December 31, 2016:

(Dollars in thousands)	Scheduled Maturity		Weighted Average Rate
2017		$420,075	0.89	%
2018	98,134		1.36
2019	137,258		1.65
2020	72,033		1.95
2021	51,222		2.50
2022 and thereafter	70,208		3.81
Total		$848,930	1.49	%

Schedule of Short-Term FHLBB Advances

The following table presents certain information concerning short-term FHLBB advances:

(Dollars in thousands)
As of and for the years ended December 31,	2016			2015			2014
Average amount outstanding during the period		$275,533			$155,874			$70,693
Amount outstanding at end of period		$352,500			$107,500			$200,000
Highest month end balance during period		$367,500			$229,500			$200,000
Weighted-average interest rate at end of period	0.79		%	0.55		%	0.37		%
Weighted-average interest rate during the period	0.73		%	0.38		%	0.35		%