Segment And Related Information (Schedule Of Segment Revenues And Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Software licenses and royalties	$ 8,830	$ 7,563
Subscriptions	13,473	9,968
Software services	20,461	18,530
Maintenance	46,050	39,850
Appraisal services	5,591	5,682
Hardware and other	1,394	1,130
Total revenues	95,799	82,723
Segment operating income	16,150	11,400
Enterprise Software Solutions [Member]
Segment Reporting Information [Line Items]
Software licenses and royalties	8,100	6,950
Subscriptions	12,901	9,712
Software services	18,741	16,614
Maintenance	41,882	35,745
Hardware and other	1,394	1,130
Intercompany	589	345
Total revenues	83,607	70,496
Segment operating income	17,828	13,419
Appraisal And Tax Software Solutions And Services [Member]
Segment Reporting Information [Line Items]
Software licenses and royalties	730	613
Subscriptions	572	256
Software services	1,720	1,916
Maintenance	4,168	4,105
Appraisal services	5,591	5,682
Total revenues	12,781	12,572
Segment operating income	2,326	2,077
Corporate [Member]
Segment Reporting Information [Line Items]
Intercompany	(589)	(345)
Total revenues	(589)	(345)
Segment operating income	$ (4,004)	$ (4,096)

Hardware and other revenue

No definition available.

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- Definition

Intercompany revenue

+ References

No definition available.

+ Details

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- Definition

Segment operating income loss

+ References

No definition available.

+ Details

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- Definition

Subscription revenue comprised of fees from application service provider arrangements and other hosted service offerings, software subscriptions and disaster recovery services. These services also include professional services and maintenance support.

+ References

No definition available.

+ Details

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- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ References

+ Details

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- Definition

Revenue derived from maintenance services provided under contracts or arrangements with clients. For example, it may include the maintenance of software, plant and equipment, and facilities.

+ References

+ Details

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

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- Definition

Aggregate revenue during the period for services rendered in the normal course of business (before deducting allowances and discounts) which are not otherwise defined in the taxonomy.

+ References

+ Details

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- Definition

Revenue from providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 605

-Section 25

-Paragraph 76

-URI http://asc.fasb.org/extlink&oid=19772080&loc=d3e132428-111767

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 97-2

-Paragraph 63

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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