Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Change in component of other comprehensive income related to retirement plan and post-retirement benefit plan

The following table details the change in the components of other comprehensive income related to the retirement plan and the post-retirement benefit plan, net of tax, at December 31, 2012 and 2011, respectively:

(dollars in thousands)
	December 31, 2012
				Post-
	Retirement			Retirement
	Plan			Benefit Plan			Total
Change in overfunded position of pension and postretirement benefits	$	1,834			(590	)		1,244
Amortization of net actuarial gain (loss)		(335	)		29			(306	)
Amortization of prior service credit		-			262			262
Total	$	1,499			(299	)		1,200

	December 31, 2011
				Post-
	Retirement			Retirement
	Plan			Benefit Plan		Total
Change in overfunded position of pension and postretirement benefits	$	3,689			1,064		4,753
Amortization of net actuarial gain (loss)		(156	)		71		(85	)
Amortization of prior service credit		-			262		262
Total	$	3,533			1,397		4,930

Asset allocation of pension and postretirement benefit plans

The asset allocations of the Company's pension and postretirement benefit plans at December 31, were as follows:

	Pension Benefit					Postretirement Benefit
	Plan Assets					Plan Assets
	2012			2011		2012		2011
Debt Securities		29	%		33		28		30
Equity Securities		65			64		64		63
Other		6			3		8		7
Total		100	%		100		100		100

Fair value of plan assets by type of financial instrument and level hierarchy

The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument:

Equity mutual funds, Fixed Income mutual funds and Debt Securities: The fair values for investment securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2).

The fair value of the plan assets at December 31, 2012 and 2011, by asset category, is as follows:

Retirement Plan			Fair Value Measurements at
			December 31, 2012 Using:
					Significant
			Quoted Prices in		Other		Significant
			Active Markets for		Observable		Unobservable
	Carrying		Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
(Dollars in thousands)
Plan Assets
Cash and cash equivalents	$	2,114		2,114		-		-
Equity mutual funds		22,599		22,599		-		-
U.S. government sponsored enterprises		4,574		-		4,574		-
Corporate bonds		4,626		-		4,626		-
Fixed income mutual funds		671		671		-		-
Total Plan Assets	$	34,584		25,384		9,200		-

Postretirement Benefits			Fair Value Measurements at
			December 31, 2012 Using:
					Significant
			Quoted Prices in		Other		Significant
			Active Markets for		Observable		Unobservable
	Carrying		Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
(Dollars in thousands)
Plan Assets
Cash and cash equivalents	$	1,148		1,148		-		-
Equity mutual funds		9,718		9,718		-		-
State and political subdivisions		4,160		-		4,160		-
Total Plan Assets	$	15,026		10,866		4,160		-

Retirement Plan			Fair Value Measurements at
			December 31, 2011 Using:
					Significant
			Quoted Prices in		Other		Significant
			Active Markets for		Observable		Unobservable
	Carrying		Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
(Dollars in thousands)
Plan Assets
Cash and cash equivalents	$	870		870		-		-
Equity mutual funds		19,232		19,232		-		-
U.S. government sponsored enterprises		6,422		-		6,422		-
Corporate bonds		3,310		-		3,310		-
Fixed income mutual funds		444		444		-		-
Total Plan Assets	$	30,278		20,546		9,732		-

Postretirement Benefits			Fair Value Measurements at
			December 31, 2011 Using:
					Significant
			Quoted Prices in		Other		Significant
			Active Markets for		Observable		Unobservable
	Carrying		Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
(Dollars in thousands)
Plan Assets
Cash and cash equivalents	$	1,001		1,001		-		-
Equity mutual funds		8,551		8,551		-		-
State and political subdivisions		4,110		-		4,110		-
Total Plan Assets	$	13,662		9,552		4,110		-

Summary of the status of stock option plans

Under each of these plans, the exercise price of each option equals the fair value of the Company's stock on the date of grant, and an option's maximum term is ten years. Options vest over four to five years from the date the options are granted for the employees plans and they are immediately vested under the directors' plans. A summary of the status of TrustCo's stock option plans as of December 31, 2012 and changes during the year then ended, are as follows:

	Outstanding Options					Exercisable Options
				Weighted					Weighted
				Average					Average
				Option					Option
	Shares			Price		Shares			Price
Balance, January 1, 2012		3,115,750		$	10.32		2,350,650		$	11.56
New options awarded-2012		273,500			5.17		-			0.00
Expired options - 2012		(485,250	)		11.83		(485,250	)		11.83
Cancelled options-2012		(12,000	)		9.91		(12,000	)		9.91
Exercised options - 2012		-			0.00		-			0.00
Options became exercisable		-			0.00		291,200			7.85
Balance, December 31, 2012		2,892,000		$	9.58		2,144,600		$	11.01

Information about total stock options outstanding

			Weighted
			Average	Weighted
Range of			Remaining	Average
Exercise	Options		Contractual	Exercise
Price	Outstanding		Life	Price
Between $5.14 and $10.00		1,754,000	6.8 years	$	7.41
Greater than $10.00		1,138,000	2.0 years		12.93
Total		2,892,000	4.9 years	$	9.58

Information about total stock options exercisable

The following table summarizes information about total stock options exercisable at December 31, 2012:

			Weighted
			Average	Weighted
Range of	Options		Remaining	Average
Exercise	Outstanding		Contractual	Exercise
Price	and Exercisable		Life	Price
Between $5.14 and $10.00		1,006,600	5.3 years	$	8.83
Greater than $10.00		1,138,000	2.0 years		12.93
Total		2,144,600	3.5 years	$	11.01

Assumptions used to determine the fair value of options granted

Valuation of Stock-Based Compensation: The fair value of the Company's employee and director stock options granted is estimated on the measurement date, which, for the Company, is the date of grant. The weighted-average fair value of stock options granted during 2012 and 2011 estimated using the Black-Scholes option pricing model, was $0.76 and $0.98, respectively. The Company estimated expected market price volatility and the expected term of the options based on historical data and other factors. There were no stock options granted in 2010. The assumptions used to determine the fair value of options granted during 2012 and 2011 are detailed in the table below:

	2012
	Employees'
	Plan
Expected dividend yield		5.08	%
Risk-free interest rate		0.80
Expected volatility rate		30.18
Expected lives		5.0	years

	2011
	Employees'			Directors'
	Plan			Plan
Expected dividend yield		5.11	%		5.11
Risk-free interest rate		1.90			1.59
Expected volatility rate		26.64			28.50
Expected lives		7.5	years		6.0

Retirement Plan [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Change in projected/accumulated benefit obligation

Change in Projected Benefit Obligation:	December 31,
(dollars in thousands)	2012			2011
Projected benefit obligation at beginning of year	$	29,283		$	27,115
Service cost		55			45
Interest cost		1,426			1,515
Benefits paid		(2,036	)		(1,605	)
Net actuarial loss (gain)		3,262			2,213
Projected benefit obligation at end of year	$	31,990		$	29,283

Change in plan assets and reconciliation of funded status

Change in Plan Assets and
Reconciliation of Funded Status:	December 31,
(dollars in thousands)	2012			2011
Fair Value of plan assets at beginning of year	$	30,278		$	31,373
Actual gain on plan assets		3,342			510
Company contributions		3,000			-
Benefits paid		(2,036	)		(1,605	)
Fair value of plan assets at end of year		34,584			30,278
Funded status at end of year	$	2,593		$	995

Amounts recognized in accumulated other comprehensive income

Amounts recognized in accumulated other comprehensive income consist of the following as of:

	December 31,
	2012		2011
Net actuarial loss	$	9,486	$	7,987

Components of net periodic cost and other amounts recognized in other comprehensive income

Components of Net Periodic Pension (Credit) Expense and Other Amounts Recognized in Other Comprehensive Income:

(dollars in thousands)	For the years ended
	December 31,
	2012			2011			2010
Service cost	$	55			45			57
Interest cost		1,426			1,515			1,498
Expected return on plan assets		(1,912	)		(1,985	)		(1,814	)
Amortization of net loss		335			156			203
Net periodic pension (credit) expense		(96	)		(269	)		(56	)
Amortization of net loss		(335	)		(156	)		(203	)
Net actuarial (gain) / loss included in other comprehensive income		1,832			3,689			(992	)
		1,497			3,533			(1,195	)
Total recognized in net periodic benefit (credit) cost and other comprehensive income	$	1,401			3,264			(1,251	)

Estimated future benefit payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:

(dollars in thousands)
Year	Pension Benefits
2013	$	1,678
2014		1,705
2015		1,723
2016		1,752
2017		1,759
2018 - 2022		9,213

Assumptions used to determine benefit obligation and net periodic expense

The assumptions used to determine benefit obligations at December 31 are as follows:

	2012			2011		2010
Discount rate		4.07	%		5.17		5.62

The assumptions used to determine net periodic pension expense for the years ended December 31 are as follows:

	2012			2011		2010
Discount rate		5.17	%		5.62		5.82
Expected long-term rate of return on assets		6.50			6.50		6.50

Post-Retirement Benefits Plan [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Change in projected/accumulated benefit obligation

Change in Accumulated Benefit Obligation:	December 31,
(dollars in thousands)	2012			2011
Accumulated benefit obligation at beginning of year	$	2,008			1,184
Service cost		33			26
Interest cost		97			98
Prior service cost		-			533
Benefits paid		(48	)		(25	)
Net actuarial gain		323			192
Accumulated benefit obligation at end of year	$	2,413			2,008

Change in plan assets and reconciliation of funded status

Change in Plan Assets and
Reconciliation of Funded Status:	December 31,
(dollars in thousands)	2012			2011
Fair value of plan assets at beginning of year	$	13,662			13,554
Actual gain on plan assets		1,364			108
Company contributions		48			25
Benefits paid		(48	)		(25	)
Fair value of plan assets at end of year		15,026			13,662
Funded status at end of year	$	12,613			11,654

Amounts recognized in accumulated other comprehensive income

Amounts recognized in accumulated other comprehensive income consist of the following as of:	December 31,
	2012			2011
Net actuarial gain	$	(2,125	)		(1,564	)
Prior service credit		(3,706	)		(3,968	)
Total	$	(5,831	)		(5,532	)

Components of net periodic cost and other amounts recognized in other comprehensive income

Components of Net Periodic Benefit (Credit) and Other Amounts Recognized in Other Comprehensive Income:
	For the years ended
	December 31,
(dollars in thousands)	2012			2011			2010
Service cost	$	33			26			31
Interest cost		97			98			62
Expected return on plan assets		(451	)		(447	)		(407	)
Amortization of net actuarial gain		(29	)		(71	)		(15	)
Amortization of prior service credit		(262	)		(262	)		(403	)
Net periodic benefit credit		(612	)		(656	)		(732	)
Net (gain) loss		(590	)		531			(836	)
Prior service cost		-			533			-
Amortization of prior service cost		262			262			403
Amortization of net gain		29			71			15
Total amount recognized in other comprehensive income		(299	)		1,397			(418	)
Total amount recognized in net periodic benefit cost and other comprehensive income	$	(911	)		741			(1,150	)

Estimated future benefit payments

The following benefit payments are expected to be paid:

Year	Postretirement Benefits
2013	$	61
2014		55
2015		58
2016		61
2017		64
2018 - 2022		435

Assumptions used to determine benefit obligation and net periodic expense

The discount rate assumption used to determine benefit obligations at December 31 is as follows:

	2012			2011		2010
Discount rate		4.07	%		5.17		5.62

The assumptions used to determine net periodic pension benefit (credit) for the years ended December 31 are as follows:

	2012			2011		2010
Discount rate		5.17	%		5.62		5.82
Expected long-term rate of return on assets, net of tax		3.30			3.30		3.30