Number Of Subsidiary Trusts Owned By Parent

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- Definition

Subordinated Borrowing Callable Price

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Stated interest rate of the subordinated debt.

+ References

No definition available.

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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- References

No definition available.

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- Details

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Short-Term Borrowings and Long-Term Debt Subordinated Debt (Details)	1 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2020 USD ($) subsidiarytrusts	Mar. 31, 2020 USD ($)	Mar. 31, 2017 USD ($)	Nov. 30, 2014 USD ($)
Subordinated Debt [Abstract]
Subsidiary trusts owned by parent \| subsidiarytrusts		3
Senior Notes
Subordinated Debt [Abstract]
Debt instrument, face amount				$ 125,000,000.0
Effective interest rate				3.95%
Stated interest rate				3.60%
Junior subordinated deferrable interest debentures
Subordinated Debt [Abstract]
Subordinated Debt		$ 16,496,000
Junior subordinated deferrable interest debentures \| Columbia Bancorp Statutory Trust
Subordinated Debt [Abstract]
Interest Rate		2.96%
Subordinated Debt		$ 6,186,000
Call Price		1.000
Junior subordinated deferrable interest debentures \| Columbia Bancorp Statutory Trust II
Subordinated Debt [Abstract]
Interest Rate		2.14%
Subordinated Debt		$ 4,124,000
Call Price		1.000
Junior subordinated deferrable interest debentures \| Columbia Bancorp Statutory Trust III
Subordinated Debt [Abstract]
Interest Rate		2.02%
Subordinated Debt		$ 6,186,000
Call Price		1.000
Subordinated debt
Subordinated Debt [Abstract]
Debt instrument, face amount	$ 150,000,000.0
Interest Rate	4.50%
Effective interest rate	4.69%
Subordinated debt \| November 2024 Subordinated Debt
Subordinated Debt [Abstract]
Effective interest rate					4.87%
Subordinated Debt					$ 100,000,000.0
Stated interest rate					4.50%
Subordinated debt \| 3.25% Notes due 2030 [Member]
Subordinated Debt [Abstract]
Debt instrument, face amount			$ 200,000,000.0
Effective interest rate			3.35%
Stated interest rate			3.25%
Subordinated debt \| 3.75% Notes due 2035 [Member]
Subordinated Debt [Abstract]
Debt instrument, face amount			$ 175,000,000.0
Effective interest rate			3.85%
Stated interest rate			3.75%