Segment And Related Information (Schedule Of Segment Revenues And Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Segment Reporting Information [Line Items]
Software licenses	$ 7,442	$ 6,822
Subscriptions	9,968	6,964
Software services	18,530	16,764
Maintenance	39,850	35,512
Appraisal services	5,682	6,197
Hardware and other	1,251	1,134
Total revenues	82,723	73,393
Segment operating income	11,400	11,081
Enterprise Software Solutions [Member]
Segment Reporting Information [Line Items]
Software licenses	6,829	6,287
Subscriptions	9,712	6,837
Software services	16,614	14,263
Maintenance	35,745	31,632
Hardware and other	1,251	1,134
Intercompany	345	407
Total revenues	70,496	60,560
Segment operating income	13,419	12,348
Appraisal And Tax Software Solutions And Services [Member]
Segment Reporting Information [Line Items]
Software licenses	613	535
Subscriptions	256	127
Software services	1,916	2,501
Maintenance	4,105	3,880
Appraisal services	5,682	6,197
Total revenues	12,572	13,240
Segment operating income	2,077	2,635
Corporate [Member]
Segment Reporting Information [Line Items]
Intercompany	(345)	(407)
Total revenues	(345)	(407)
Segment operating income	$ (4,096)	$ (3,902)

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

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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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