Supplemental balance sheet information (goodwill) (Details) (USD $) In Thousands	9 Months Ended
Sep. 30, 2011	Dec. 31, 2010
Goodwill [Line Items]
Goodwill, gross	$ 796,944	$ 745,937
Accumulated impairment charges	(20,000)	(20,000)
Goodwill, net	776,944	725,937
Acquisition of Banker's Dashboard (see Note 5)	26,281
Acquisition of PsPrint (see Note 5)	24,826
Currency translation adjustment	(100)
Goodwill, gross	796,944	745,937
Small Business Services [Member]
Goodwill [Line Items]
Goodwill, gross	621,260	596,534
Accumulated impairment charges	(20,000)	(20,000)
Goodwill, net	601,260	576,534
Acquisition of Banker's Dashboard (see Note 5)	0
Acquisition of PsPrint (see Note 5)	24,826
Currency translation adjustment	(100)
Goodwill, gross	621,260	596,534
Financial Services [Member]
Goodwill [Line Items]
Goodwill, gross	27,178	897
Accumulated impairment charges	0	0
Goodwill, net	27,178	897
Acquisition of Banker's Dashboard (see Note 5)	26,281
Acquisition of PsPrint (see Note 5)	0
Currency translation adjustment	0
Goodwill, gross	27,178	897
Direct Checks [Member]
Goodwill [Line Items]
Goodwill, gross	148,506	148,506
Accumulated impairment charges	0	0
Goodwill, net	148,506	148,506
Acquisition of Banker's Dashboard (see Note 5)	0
Acquisition of PsPrint (see Note 5)	0
Currency translation adjustment	0
Goodwill, gross	$ 148,506	$ 148,506

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph l

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 34

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

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