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Securities (Tables)

12 Months Ended

Dec. 31, 2017

Securities [Abstract]

Book values and approximate fair values of investment securities

The book values and approximate fair values of investment securities at December 31, 2017 and 2016 are summarized as follows:

		2017																2016
		Amortized				Fair				Unrealized								Amortized				Fair				Unrealized
($ in thousands)		Cost				Value				Gains				(Losses)				Cost				Value				Gains				(Losses)
Securities available for sale:
Government-sponsored enterprise securities		$	14,000				13,867				—				(133	)			17,497				17,490				—				(7	)
Mortgage-backed securities			297,690				295,213				246				(2,722	)			151,001				148,065				155				(3,091	)
Corporate bonds			33,792				34,190				512				(114	)			33,833				33,600				91				(324	)
Equity securities			—				—				—				—				83				174				96				(5	)
Total available for sale		$	345,482				343,270				758				(2,969	)			202,414				199,329				342				(3,427	)
Securities held to maturity:
Mortgage-backed securities		$	63,829				63,092				—				(737	)			80,585				79,283				—				(1,302	)
State and local governments			54,674				55,906				1,280				(48	)			49,128				50,912				1,815				(31	)
Total held to maturity		$	118,503				118,998				1,280				(785	)			129,713				130,195				1,815				(1,333	)

Schedule of information regarding securities with unrealized losses

The following table presents information regarding securities with unrealized losses at December 31, 2017:

($ in thousands)		Securities in an Unrealized Loss Position for Less than 12 Months								Securities in an Unrealized Loss Position for More than 12 Months								Total
		Fair Value				Unrealized Losses				Fair Value				Unrealized Losses				Fair Value				Unrealized Losses
Government-sponsored enterprise securities		$	10,897				103				2,970				30				13,867				133
Mortgage-backed securities			192,702				1,582				125,060				1,877				317,762				3,459
Corporate bonds			2,500				49				935				65				3,435				114
State and local governments			7,928				48				—				—				7,928				48
Total temporarily impaired securities		$	214,027				1,782				128,965				1,972				342,992				3,754

The following table presents information regarding securities with unrealized losses at December 31, 2016:

($ in thousands)		Securities in an Unrealized Loss Position for Less than 12 Months								Securities in an Unrealized Loss Position for More than 12 Months								Total
		Fair Value				Unrealized Losses				Fair Value				Unrealized Losses				Fair Value				Unrealized Losses
Government-sponsored enterprise securities		$	7,990				7				—				—				7,990				7
Mortgage-backed securities			196,999				3,841				19,001				552				216,000				4,393
Corporate bonds			27,027				259				935				65				27,962				324
Equity securities			—				—				7				5				7				5
State and local governments			801				31				—				—				801				31
Total temporarily impaired securities		$	232,817				4,138				19,943				622				252,760				4,760

Schedule of book values and approximate fair values of investment securities by contractual maturity

The book values and approximate fair values of investment securities at December 31, 2017, by contractual maturity, are summarized in the table below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

		Securities Available for Sale								Securities Held to Maturity
		Amortized				Fair				Amortized				Fair
($ in thousands)		Cost				Value				Cost				Value
Debt securities
Due within one year		$	—				—			$	2,257				2,258
Due after one year but within five years			15,007				14,905				23,285				23,795
Due after five years but within ten years			27,785				28,042				23,502				24,219
Due after ten years			5,000				5,110				5,630				5,634
Mortgage-backed securities			297,690				295,213				63,829				63,092
Total debt securities			345,482				343,270				118,503				118,998
Equity securities			—				—				—				—
Total securities		$	345,482				343,270			$	118,503				118,998

X

- Definition

Schedule of investment securities which includes, but is not limited to, amortized cost basis, fair value, and gross unrealized gain (loss) values by type of security.

+ References

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- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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- Definition

For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

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