Debt Instrument, Liquidation Amount Per Share

No definition available.

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- Definition

Percentage of Securities Eligible for Tier 2 Capital Treatment

+ References

No definition available.

+ Details

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- Definition

Securities Eligible for Tier 2 Capital Treatment, Decline Rate

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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- Definition

The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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- Details

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- Details

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Floating Rate Capital Debt - Narrative (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Apr. 30, 1997	Jan. 31, 1997	Dec. 31, 2020
Debt Instrument [Line Items]
Percentage of securities eligible for Tier 2 capital treatment			20.00%
Securities eligible for Tier 2 capital treatment, decline rate			10.00%
Liquidation amount per security (in usd per share)			$ 1,000
NTC Capital I Subordinated Debentures due January 15, 2027
Debt Instrument [Line Items]
Floating rate capital securities, issued		$ 150,000,000
Debt instrument, basis spread on variable rate		0.52%
Floating rate capital securities, due date	Jan. 15, 2027
Liquidation amount per security (in usd per share)			1,000
NTC Capital II Subordinated Debentures due April 15, 2027
Debt Instrument [Line Items]
Floating rate capital securities, issued	$ 120,000,000
Debt instrument, basis spread on variable rate	0.59%
Liquidation amount per security (in usd per share)			$ 1,000
London Interbank Offered Rate (LIBOR) \| NTC Capital I Subordinated Debentures due January 15, 2027
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			60.50%
London Interbank Offered Rate (LIBOR) \| NTC Capital II Subordinated Debentures due April 15, 2027
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			67.90%