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Income Taxes Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred Tax Assets: |  |
Stock-based compensation expense | $ 24,686 | $ 24,125
State net operating loss carryforward | 67,472 | 67,825
Foreign net operating loss carryforward and other | 6,081 | 6,533
Basis differences in investments | 4,436 | 4,118
Federal benefit of state tax deduction for uncertain tax positions | 2,124 | 1,882
Revenue and expense recognized in different periods for financial reporting and income tax purposes | 1,960 | 1,657
Other assets | 1,271 | 1,049
Total deferred income tax assets | 108,030 | 107,189
Operating Loss Carryforwards [Line Items] |  |
Net deferred income tax assets | 37,299 | 34,873
Deferred Tax Liabilities: |  |
Capitalized software currently deductible for tax purposes, net of amortization | (68,265) | (71,067)
Difference in financial reporting and income tax depreciation methods | (6,032) | (6,545)
Difference between book and tax basis of other assets | (4,593) | (4,429)
Goodwill and other intangibles | (2,170) | (1,823)
Foreign dividend withholding tax | (312) | (312)
Capitalized contract costs | (7,072) | (5,490)
Other liabilities | (1,755) | (960)
Total deferred income tax liabilities | (90,199) | (90,626)
Net deferred income tax liabilities | (52,900) | (55,753)
State |  |
Operating Loss Carryforwards [Line Items] |  |
Less: Net operating loss valuation allowance | (64,737) | (65,870)
Foreign |  |
Operating Loss Carryforwards [Line Items] |  |
Less: Net operating loss valuation allowance | $ (5,994) | $ (6,446)

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