Closing Stock Price Per Share Of Common Stock

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Core Deposit Intangibles Percentage

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- Definition

Exchange Ratio Of Common Shares

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- Definition

Number Of Commercial Banks

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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Number of shares of equity interests issued or issuable to acquire entity.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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- Definition

Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Amount of increase (decrease) of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Business Combinations - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	6 Months Ended
	Oct. 03, 2014	Mar. 31, 2015	Jun. 30, 2014 Bank	Dec. 31, 2014	Aug. 21, 2007
Business Acquisition [Line Items]
Business acquisition, common stock issued to acquiree's shareholders	6,575,550
Fixed share exchange ratio	0.9433tcbk_ExchangeRatioOfCommonShares
Aggregate ownership percentage	28.90%
Cash in-lieu of fractional shares	$ 6,823
Business combination share outstanding		22,740,503us-gaap_CommonStockSharesOutstanding		22,714,964us-gaap_CommonStockSharesOutstanding	15,814,662us-gaap_CommonStockSharesOutstanding
Assets		3,895,860,000us-gaap_Assets		3,916,458,000us-gaap_Assets
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Acquisition, completion date		Oct. 03, 2014
Closing stock price	$ 23.01
Consideration paid per share	$ 21.71
Cash in-lieu of fractional shares	7,000
Business combination share outstanding	22,714,964
Business combination consideration value	151,310,000
Number of commercial banks			22
Assets			935,000,000
Increase in net book value of land and buildings acquired	4,785,000
Recognized intangible related to acquisition	6,614,000
North Valley Bancorp [Member] \| Junior subordinated debt [Member]
Business Acquisition [Line Items]
Discount on debt instrument	6,664,000
North Valley Bancorp [Member] \| Minimum [Member] \| Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	18 years
North Valley Bancorp [Member] \| Maximum [Member] \| Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	21 years
North Valley Bancorp [Member] \| Core deposit intangibles [Member]
Business Acquisition [Line Items]
Recognized intangible related to acquisition	$ 6,614,000
Percentage of acquired intangibles	0.97%
Finite lived intangible asset useful life	7 years