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Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments debt and equity securities [Abstract]

Available-for-sale Securities [Table Text Block]

			1 year	1 to 5	5 to 10	After 10	Fair		Gross Unrealized			Amortized
(Dollars in thousands)			or less	years	years	years	Value		Gains	Losses		Cost
March 31, 2018
Agency obligations (a)		$	—	29,027	22,654	—	51,681		6	1,399		$	53,074
Agency RMBS (a)			—	—	10,356	125,437	135,793		137	3,871			139,527
State and political subdivisions			—	3,420	7,515	60,768	71,703		883	678			71,498
	Total available-for-sale	$	—	32,447	40,525	186,205	259,177		1,026	5,948		$	264,099

December 31, 2017
Agency obligations (a)		$	—	29,253	23,809	—	53,062		79	904		$	53,887
Agency RMBS (a)			—	—	11,201	121,871	133,072		330	1,639			134,381
State and political subdivisions			—	2,564	9,999	59,000	71,563		1,616	237			70,184
	Total available-for-sale	$	—	31,817	45,009	180,871	257,697		2,025	2,780		$	258,452
(a) Includes securities issued by U.S. government agencies or government sponsored entities.

Available-for-sale Securities, Continuous Unrealized Loss Position [Table Text Block]

				Less than 12 Months						12 Months or Longer						Total
				Fair			Unrealized			Fair			Unrealized			Fair			Unrealized
(Dollars in thousands)				Value			Losses			Value			Losses			Value			Losses
March 31, 2018:
Agency obligations			$	29,050			264			19,981			1,135		$	49,031			1,399
Agency RMBS				77,341			1,710			48,048			2,161			125,389			3,871
State and political subdivisions				13,501			252			9,918			426			23,419			678
		Total	$	119,892			2,226			77,947			3,722		$	197,839			5,948

December 31, 2017:
Agency obligations			$	14,381			99			20,353			805		$	34,734			904
Agency RMBS				53,440			363			50,729			1,276			104,169			1,639
State and political subdivisions				2,009			22			10,155			215			12,164			237
		Total	$	69,830			484			81,237			2,296		$	151,067			2,780

Schedule of Realized Gain (Loss) [Table Text Block]

Realized Gains and Losses
The following table presents the gross realized gains and losses on sales of securities.
										Quarter ended March 31,
(Dollars in thousands)										2018			2017
Gross realized gains									$	—		$	2
	Realized gains, net								$	—		$	2

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Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
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Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

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