Document and Entity Information [Abstract] Document and Entity Information. Amendment Flag Current Fiscal Year End Date Document Fiscal Period Focus Document Fiscal Year Focus Document Period End Date Document Type Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Emerging Growth Company Entity Ex Transition Period Entity Filer Category Entity Interactive Data Current Entity Public Float Entity Registrant Name Entity Shell Company Entity Small Business Entity Voluntary Filers Entity Well-known Seasoned Issuer Significant Accounting Policies [Abstract] Accounts Payable, Current Accounts payable Accounts Receivable, after Allowance for Credit Loss Trade receivables, net of reserve Accrued Liabilities, Current Accrued expenses Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation Accumulated Other Comprehensive Income (Loss), Net of Tax Unrealized after-tax security gains Tax Reserves [Abstract] Additional Paid in Capital, Common Stock Additional paid-in capital Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Net revenue recognition standard adjustment Assets Total assets Assets, Current Current assets Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax Change in unrealized security gains Buildings and Improvements, Gross Buildings Cash and Cash Equivalents, at Carrying Value Cash and equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash and equivalents Common Stock Including Additional Paid in Capital [Member] Common Stock Paid-in capital Common Stock, Par or Stated Value Per Share Common stock par value Common Stock, Shares Authorized Common stock shares authorized Common Stock, Shares, Issued Common stock shares issued Common Stock, Shares, Outstanding Common stock shares outstanding Common Stock, Value, Issued Common stock value Qualified Profit Sharing Plan [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Comprehensive Income (Loss) Note [Text Block] Comprehensive Income Presentation Deferred Taxes [Abstract] Deferred Revenue Deferred revenue Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deferred tax assets Deferred Tax Liabilities, Net, Noncurrent Deferred tax liabilities Depreciation, Depletion and Amortization Depreciation and amortization expense Earnings Per Share [Abstract] Earnings Per Share [Text Block] Earnings Per Share Income Tax [Abstract] Equity Component [Domain] Equity Method Investments [Abstract] Equity Method Investments [Table Text Block] Equity Method Investments Federal Income Tax Expense (Benefit), Continuing Operations Federal income tax Federal Income Tax Note [Table Text Block] Income Tax Furniture and Fixtures, Gross Furniture and fixtures Gain (Loss) on Disposition of Other Assets Loss (gain) on sale of fixed assets Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee Gain on sale of property Income (Loss) from Continuing Operations before Income Taxes, Domestic Pretax income Income Statement [Abstract] Income Tax Accounting [Abstract] Income Tax Disclosure [Text Block] Income Tax Accounting Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle Cumulative effect of accounting change Income Tax Expense (Benefit) Income tax Income Taxes Paid, Net Cash paid for income taxes Increase (Decrease) in Accounts Payable Change in accounts payable Increase (Decrease) in Accounts Receivable Change in trade receivables, net of reserve Increase (Decrease) in Income Taxes Payable Change in taxes payable Increase (Decrease) in Accrued Liabilities Change in accrued expenses Increase (Decrease) in Deferred Revenue Change in deferred revenue Increase (Decrease) in Other Deferred Liability Change in deferred tax liabilities Increase (Decrease) in Other Noncurrent Assets Change in other assets Increase (Decrease) in Other Noncurrent Liabilities Change in tax reserves Increase (Decrease) in Other Operating Assets Change in contract assets, prepaid and other Land Land Leases [Abstract] Leases of Lessor Disclosure [Text Block] Leases Legal Costs, Policy [Policy Text Block] Litigation Liabilities Total liabilities Liabilities and Equity Total liabilities and shareholder equity Liabilities, Current Current liabilities Litigation [Abstract] Machinery and Equipment, Gross Computer equipment Marketable Securities Marketable securities us-gaap_MarketableSecuritiesAbstract: marketable securities [abstract] Marketable Securities, Gain (Loss) Loss (gain) on sale of marketable securities Marketable Securities [Abstract] Marketable Securities [Table Text Block] Marketable Securities Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Investing Activities Net cash from investing activities Net Cash Provided by (Used in) Operating Activities Net cash from operating activities Net Income (Loss) Attributable to Parent Net income Net income New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income Net revenue recognition standard adjustment Operating Costs and Expenses Operations, development Operating Expenses Operating expense Accrued Expenses [Abstract] Operating Income (Loss) Operating income Other Assets, Current Contract assets, prepaid and other Other Assets, Noncurrent Other assets Other Comprehensive Income (Loss) [Member] Other Comprehensive Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Change in unrealized after-tax security gains Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Change in unrealized after-tax security gains Other Expense [Abstract] Other Income [Abstract] Other Liabilities, Noncurrent Tax reserves Other Nonoperating Expense Other expense Other Nonoperating Income Other income Other Selling, General and Administrative Expense Selling, G & A Payments of Dividends Dividends paid Payments to Acquire Marketable Securities Purchases of marketable securities Payments to Acquire Property, Plant, and Equipment Purchases of fixed assets Postconfirmation, Cash and Cash Equivalents Cash and equivalents at end of year Preconfirmation, Cash and Cash Equivalents Cash and equivalents at beginning of year Proceeds from Sale and Maturity of Marketable Securities Sales of marketable securities Proceeds from Sale of Property, Plant, and Equipment Sales of fixed assets Fixed Assets [Abstract] Property, Plant and Equipment, Net Fixed assets Property, Plant and Equipment [Table Text Block] Fixed Assets Supplemental Data [Abstract] Quarterly Financial Information [Text Block] Supplemental Data Retained Earnings, Unappropriated Retained income Retained Interest [Member] Retained income Revenues Total revenue Reserve for Doubtful Accounts [Abstract] Sales Revenue, Goods, Net Product revenue Sales Revenue, Services, Net Service revenue Schedule of Defined Benefit Plans Disclosures [Table Text Block] Qualified Profit Sharing Plan Schedule of Other Nonoperating Expense, by Component [Table Text Block] Other Expense Schedule of Other Nonoperating Income, by Component [Table Text Block] Other Income Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Accrued Expenses Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Reporting Significant Accounting Policies [Text Block] Significant Accounting Policies State and Local Income Tax Expense (Benefit), Continuing Operations State income tax (benefit) Equity Components [Axis] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Comprehensive Income Presentation [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Stockholders' Equity Attributable to Parent Shareholder equity Balance Balance Summary of Deferred Tax Liability Not Recognized [Table Text Block] Deferred Taxes Summary of Income Tax Contingencies [Table Text Block] Tax Reserves Summary of Valuation Allowance [Table Text Block] Reserve for Doubtful Accounts Supplemental Cash Flow Information [Abstract] Supplemental Disclosure: Taxes Payable, Current Taxes payable Unrealized Gain (Loss) on Securities Change in unrealized securities Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Change in deferred tax assets