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Significant Accounting Policies (Narrative) (Details) | 9 Months Ended |
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Sep. 30, 2021 | May 03, 2007
Significant Accounting Policies [Line Items] |  |
SIP expense - Year of grant |  | 50.00%
SIP expense - Remaining vesting period |  | 50.00%
SIP expense - Employees over 59 in year of grant |  | 100.00%
Percent of shares cancelled post employment |  | 50.00%
Over 59 percent of shares eligible |  | 100.00%
Property and equipment useful lives, description | Computer equipment is depreciated over three to five years and office furniture and equipment are depreciated over five to seven years. Intangible assets with a finite life are amortized on a straight-line basis over their estimated useful lives of three to five years and tested for recoverability whenever events indicate that the carrying amounts may not be recoverable. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years. |
Maximum [Member] | Computer Equipment [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property and equipment useful lives | 5 years |
Maximum [Member] | Office Furniture And Equipment [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property and equipment useful lives | 7 years |
Maximum [Member] | Internally Developed Software [Member] |  |
Significant Accounting Policies [Line Items] |  |
Intangible assets useful lives | 3 years |
Maximum [Member] | Finite-Lived Intangible Assets [Member] |  |
Significant Accounting Policies [Line Items] |  |
Intangible assets useful lives | 5 years |
Minimum [Member] | Computer Equipment [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property and equipment useful lives | 3 years |
Minimum [Member] | Office Furniture And Equipment [Member] |  |
Significant Accounting Policies [Line Items] |  |
Property and equipment useful lives | 5 years |
Minimum [Member] | Finite-Lived Intangible Assets [Member] |  |
Significant Accounting Policies [Line Items] |  |
Intangible assets useful lives | 3 years |

X
- Definition Percentage of unvested shares to be received by employees over the age of 59 who discontinue employment with the Company without cause and continue to meet the terms of the plans' post-employment provisions. + References No definition available. + Details
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- Definition Percentage of unvested shares forfeited by employees who discontinue employment with the Company without cause and continue to meet the terms of the plans' post-employment provisions. + References No definition available. + Details
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- Definition Percent of fair value of stock grant expensed over the related vesting period utilizing the “graded vesting” method permitted under ASC Topic 718. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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