XML 67 R24.htm IDEA: XBRL DOCUMENT v3.20.1

Securities (Tables)

3 Months Ended

Mar. 31, 2020

Securities

Schedule of amortized cost and fair value of the securities portfolio and corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive loss

					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
March 31, 2020		Cost1			Gains			Losses			Value
Securities available-for-sale
U.S. Treasury		$	4,011		$	141		$	-		$	4,152
U.S. government agencies			7,870			-			(147)			7,723
U.S. government agencies mortgage-backed			16,021			1,234			-			17,255
States and political subdivisions			244,429			12,353			(1,687)			255,095
Collateralized mortgage obligations			56,104			709			(3,410)			53,403
Asset-backed securities			82,005			210			(4,488)			77,727
Collateralized loan obligations			36,104			69			(1,834)			34,339
Total securities available-for-sale		$	446,544		$	14,716		$	(11,566)		$	449,694

					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
December 31, 2019		Cost1			Gains			Losses			Value
Securities available-for-sale
U.S. Treasury		$	4,010		$	26		$	-		$	4,036
U.S. government agencies			8,502			-			(165)			8,337
U.S. government agencies mortgage-backed			16,164			443			(19)			16,588
States and political subdivisions			240,399			11,207			(2,431)			249,175
Collateralized mortgage obligations			57,059			963			(38)			57,984
Asset-backed securities			82,114			617			(887)			81,844
Collateralized loan obligations			66,898			29			(243)			66,684
Total securities available-for-sale		$	475,146		$	13,285		$	(3,783)		$	484,648

Schedule of fair value, amortized cost and weighted average yield of debt securities by contractual maturity along with securities not due at a single maturity date, primarily mortgage-backed securities (MBS), asset-backed securities, and collateralized loan obligations

					Weighted
		Amortized			Average			Fair
Securities available-for-sale		Cost			Yield			Value
Due in one year or less		$	6,606		2.42	%		$	6,625
Due after one year through five years			6,287		2.11				6,509
Due after five years through ten years			16,117		2.96				16,506
Due after ten years			227,300		3.01				237,330
			256,310		2.97				266,970
Mortgage-backed and collateralized mortgage obligations			72,125		3.30				70,658
Asset-backed securities			82,005		2.75				77,727
Collateralized loan obligations			36,104		3.59				34,339
Total securities available-for-sale		$	446,544		3.03	%		$	449,694

Schedule of amortized cost and fair value of securities that exceed 10% of stockholders equity

The Company has invested in securities issued from two originators that individually amount to over 10% of the Company’s stockholders equity.  Information regarding these two issuers and the value of the securities issued follows:

		March 31, 2020
(in thousands)		Amortized			Fair
Issuer		Cost			Value
GCO Education Loan Funding Corp		$	27,911		$	26,501
Towd Point Mortgage Trust			33,360			31,996

Schedule of securities with unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position

		Less than 12 months								12 months or more
March 31, 2020		in an unrealized loss position								in an unrealized loss position								Total
		Number of		Unrealized			Fair			Number of		Unrealized			Fair			Number of		Unrealized			Fair
Securities available-for-sale		Securities		Losses			Value			Securities		Losses			Value			Securities		Losses			Value
U.S. government agencies		-		$	-		$	-		4		$	147		$	7,723		4		$	147		$	7,723
States and political subdivisions		4			588			25,038		2			1,099			5,904		6			1,687			30,942
Collateralized mortgage obligations		12			3,339			35,811		2			71			1,051		14			3,410			36,862
Asset-backed securities		9			2,530			36,074		2			1,958			29,244		11			4,488			65,318
Collateralized loan obligations		3			849			16,140		2			985			11,187		5			1,834			27,327
Total securities available-for-sale		28		$	7,306		$	113,063		12		$	4,260		$	55,109		40		$	11,566		$	168,172

		Less than 12 months								12 months or more
December 31, 2019		in an unrealized loss position								in an unrealized loss position								Total
		Number of		Unrealized				Fair		Number of		Unrealized				Fair		Number of		Unrealized				Fair
Securities available-for-sale		Securities		Losses				Value		Securities		Losses				Value		Securities		Losses				Value
U.S. government agencies		-			-			-		4			165			8,337		4			165			8,337
U.S. government agencies mortgage-backed		3			10			3,018		2			9			843		5			19			3,861
States and political subdivisions		6			1,665			41,043		2			766			6,593		8			2,431			47,636
Collateralized mortgage obligations		2			26			9,054		2			12			1,209		4			38			10,263
Asset-backed securities		4			839			54,540		1			48			3,238		5			887			57,778
Collateralized loan obligations		4			62			21,927		4			181			25,020		8			243			46,947
Total securities available-for-sale		19		$	2,602		$	129,582		15		$	1,181		$	45,240		34		$	3,783		$	174,822

Schedule of proceeds from sale and gross realized gains and losses on sale of securities

			Three Months Ended
			March 31,
Securities available-for-sale		2020			2019
Proceeds from sales of securities		$	18,126		$	81,524
Gross realized gains on securities			17			605
Gross realized losses on securities			(41)			(578)
Net realized (losses) gains		$	(24)		$	27
Income tax benefit (expense) on net realized (losses) gains		$	7		$	(8)
Effective tax rate applied			29.2	%		29.6	%

X

- Definition

Tabular disclosure of amortized cost and fair value of securities that exceed 10% of stockholders equity.

+ References

No definition available.

+ Details

Name:	osbc_ScheduleOfAmortizedCostAndFairValueOfSecuritiesThatExceedTenPercentOfStockholdersEquityTableTextBlock
Namespace Prefix:	osbc_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the reconciliation of available-for-sale securities and held-to-maturity securities from cost basis to fair value.

+ References

No definition available.

+ Details

Name:	osbc_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturitySecuritiesReconciliationTableTextBlock
Namespace Prefix:	osbc_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
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

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563

+ Details

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