Short-Term Borrowings and Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Short-Term Borrowings and Long-Term Debt [Abstract]

Schedule of Short-term Debt

Short-term borrowings as of December 31, 2017, 2016 and 2015 and the related maximum amounts outstanding at the end of any month in each of the three years then ended are presented below. The securities underlying the repurchase agreements remain in available for sale investment securities.

	December 31,						Maximum Outstanding
	2017		2016		2015		2017		2016		2015
	(in thousands)
Federal funds purchased	$	220,000	$	278,570	$	197,235	$	387,110	$	449,184	$	266,338
Short-term FHLB advances (1)	—		—		110,000		250,000		—		200,000
Customer repurchase agreements	172,017		195,734		111,496		233,274		221,989		212,509
Customer short-term promissory notes	225,507		67,013		78,932		237,298		77,887		93,176
	$	617,524	$	541,317	$	497,663

(1) Represents FHLB advances with an original maturity term of less than one year.

Schedule of Repurchase Agreements

The following table presents information related to customer repurchase agreements:

	2017			2016			2015
	(dollars in thousands)
Amount outstanding as of December 31	$	172,017		$	195,734		$	111,496
Weighted average interest rate as of December 31	0.13		%	0.10		%	0.15		%
Average amount outstanding during the year	$	188,974		$	184,978		$	161,093
Weighted average interest rate during the year	0.12		%	0.11		%	0.10		%

Schedule of Long-term Debt Instruments

FHLB advances with an original maturity of one year or more and long-term debt included the following as of December 31:

	2017			2016
	(in thousands)
FHLB advances	$	652,113		$	567,240
Subordinated debt	250,000			350,000
Senior notes	125,000			—
Junior subordinated deferrable interest debentures	16,496			16,496
Unamortized discounts and issuance costs	(5,263		)	(4,333		)
	$	1,038,346		$	929,403

Schedule of Maturities of Long-term Debt

The following table summarizes the scheduled maturities of FHLB advances with an original maturity of one year or more and long-term debt as of December 31, 2017 (in thousands):

Year
2018	$	99,217
2019	202,275
2020	142,039
2021	199,054
2022	130,076
Thereafter	265,685
	$	1,038,346

Schedule of Subordinated Borrowing

The following table provides details of the debentures as of December 31, 2017 (dollars in thousands):

Debentures Issued to	Fixed/ Variable	Interest Rate		Amount		Maturity	Callable	Call Price
Columbia Bancorp Statutory Trust	Variable	3.99	%	$	6,186	06/30/34	03/31/18	100.0
Columbia Bancorp Statutory Trust II	Variable	3.48	%	4,124		03/15/35	03/31/18	100.0
Columbia Bancorp Statutory Trust III	Variable	3.36	%	6,186		06/15/35	03/31/18	100.0
				$	16,496