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Financial Statement Presentation
6 Months Ended
Jun. 30, 2011
Financial Statement Presentation [Abstract]  
Financial Statement Presentation
1.          Financial Statement Presentation
The unaudited Consolidated Interim Financial Statements of TrustCo Bank Corp NY (the Company) include the accounts of the subsidiaries after elimination of all significant intercompany accounts and transactions.  Prior period amounts are reclassified when necessary to conform to the current period presentation.  The net income reported for the three and six months ended June 30, 2011 is not necessarily indicative of the results that may be expected for the year ending December 31, 2011, or any interim periods.  These financial statements consider events that occurred through the date of filing.

In the opinion of the management of the Company, the accompanying unaudited Consolidated Interim Financial Statements contain all adjustments necessary to present fairly the financial position as of June 30, 2011 and the results of operations for the three and six month periods ended June 30, 2011 and 2010 and cash flows for the six months ended June 30, 2011 and 2010.  The accompanying Consolidated Interim Financial Statements should be read in conjunction with the TrustCo Bank Corp NY year-end Consolidated Financial Statements, including notes thereto, which are included in TrustCo Bank Corp NY's 2010 Annual Report to Shareholders on Form 10-K.  The accompanying consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States.