XML 28 R17.htm IDEA: XBRL DOCUMENT v3.20.2

Securities (Tables)

6 Months Ended

Jun. 30, 2020

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
June 30, 2020
Agency obligations (a)		$	5,027	30,232	40,209	5,340	80,808		3,210	—		$	77,598
Agency RMBS (a)			—	1,461	9,001	144,144	154,606		3,488	163			151,281
State and political subdivisions			97	1,168	6,581	58,933	66,779		3,337	10			63,452
	Total available-for-sale	$	5,124	32,861	55,791	208,417	302,193		10,035	173		$	292,331

December 31, 2019
Agency obligations (a)		$	4,993	27,245	18,470	—	50,708		215	98		$	50,591
Agency RMBS (a)			—	560	4,510	118,207	123,277		798	261			122,740
State and political subdivisions			—	1,355	6,166	54,396	61,917		2,104	9			59,822
	Total available-for-sale	$	4,993	29,160	29,146	172,603	235,902		3,117	368		$	233,153
(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
June 30, 2020:
Agency obligations			$	28,480			163			—			—		$	28,480			163
State and political subdivisions				1,337			10			—			—			1,337			10
		Total	$	29,817			173			—			—		$	29,817			173

December 31, 2019:
Agency obligations			$	24,734			97			4,993			1		$	29,727			98
Agency RMBS				40,126			98			21,477			163			61,603			261
State and political subdivisions				2,741			9			—			—			2,741			9
		Total	$	67,601			204			26,470			164		$	94,071			368

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 June 30,						Six months ended June 30,
(Dollars in thousands)					2020			2019			2020			2019
Gross realized gains				$	100			27		$	106			32
Gross realized losses					(19)			(19)			(19)			(19)
	Realized gains, net			$	81			8		$	87			13

X

- References

No definition available.

+ Details

Name:	aubn_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTableTextBlock
Namespace Prefix:	aubn_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563

+ Details

Name:	us-gaap_ScheduleOfRealizedGainLossTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration