Investment Securities Maturity of Held-to-Maturity Securities (Tables)

3 Months Ended

Mar. 31, 2019

Schedule of Held-to-maturity Securities [Line Items]

Debt Securities, Held-to-maturity [Table Text Block]

Below is an analysis of the amortized cost and fair values of debt securities held to maturity at:

	March 31, 2019									December 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(dollars in thousands)
Obligations of U.S. Government Agencies:
Mortgage-Backed Securities – Residential	$	3,606	$	—	$	(26	)	$	3,580	$	3,635	$	—	$	(97	)	$	3,538
Mortgage-Backed Securities- Commercial	54,898		—		(1,763		)	53,135		55,221		—		(2,327		)	52,894
Obligations of U.S. Government-Sponsored Enterprises:
Mortgage-Backed Securities – Residential	270,807		352		(3,303		)	267,856		279,109		212		(7,254		)	272,067
Mortgage-Backed Securities – Commercial	12,894		—		(95		)	12,799		13,159		—		(258		)	12,901
Obligations of States and Political Subdivisions	42,304		400		(31		)	42,673		42,331		175		(313		)	42,193
Debt Securities Issued by Foreign Governments	400		—		—			400		400		—		—			400
Total Securities Held to Maturity	$	384,909	$	752	$	(5,218	)	$	380,443	$	393,855	$	387	$	(10,249	)	$	383,993

Schedule of Held-to-Maturity Securities by Maturity [Table Text Block]

The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2019, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or repay obligations with or without call or prepayment penalties.

	Amortized Cost		Estimated Fair Value
	(dollars in thousands)
Due within 1 year	$	518	$	518
Due after 1 but within 5 years	7,922		7,965
Due after 5 but within 10 years	34,264		34,590
Due after 10 years	—		—
	42,704		43,073
Mortgage-Backed Securities (a)	342,205		337,370
Total Debt Securities	$	384,909	$	380,443

(a) Mortgage-Backed Securities include an amortized cost of $58.5 million and a fair value of $56.7 million for Obligations of U.S. Government agencies issued by Ginnie Mae and an amortized cost of $283.7 million and a fair value of $280.7 million for Obligations of U.S. Government-sponsored enterprises issued by Fannie Mae and Freddie Mac.