Costs associated with the execution and/or renewal of customer contracts which are reported as assets net of accumulated amortization.

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Carrying value as of the balance sheet date of the obligations incurred through that date and payable for amounts due under customer contracts relating to the execution and/or renewal of contracts. Used to reflect the sum of the current and long-term portions of the liabilities.

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- Definition

The increase in the total amount of net periodic benefit cost for postretirement benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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The increase in the unfunded status of a postretirement benefit plan. The unfunded status is measured as the difference between fair value of plan assets and the benefit obligation.

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- Definition

The amount of increase or decrease in the fair value of plan assets during the reporting period.

+ References

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value.

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Market risks (Details) (USD $) In Thousands					3 Months Ended	12 Months Ended
Market risks (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Dec. 31, 2009	Mar. 31, 2009 Downturn in U.S. Economy [Member]	Dec. 31, 2010 Downturn in U.S. Economy [Member]	Dec. 31, 2009 Downturn in U.S. Economy [Member]	Dec. 31, 2008 Downturn in U.S. Economy [Member]	Sep. 30, 2011 Downturn in U.S. Economy [Member]
Economic conditions [Abstract]
Impairment charge, goodwill, Small Business Services segment					$ 20,000
Impairment charge, indefinite-lived trade name, Small Business Services segment					4,900
Postretirement benefit plan [Abstract]
Increase in unfunded status of postretirement benefit plan								29,879
Increase in postretirement benefit expense							2,374
Increase in fair value of plan assets						10,990	21,592
Financial institution clients [Abstract]
Contract acquisition costs	57,364	57,476	55,159	45,701					57,364
Liabilities for contract acquisition costs not paid									$ 21,083