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Description Of Business And Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Description Of Business And Summary Of Significant Accounting Policies [Abstract] |
Estimated Useful Lives Of Leasehold Improvements, Property And Equipment |
Leasehold improvements and buildings | 3-20 years
Furniture and fixtures | 4-7 years
Equipment | 3-10 years
Impact Of Topic 842 On Balance Sheet |
| December 31, 2018 |  | Adjustments Due to the Adoption of Topic 842 |  | January 1, 2019
Assets |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 249,953 |  | $ | - |  | $ | 249,953
Accounts receivable |  | 62,312 |  |  | - |  |  | 62,312
Inventory |  | 21,555 |  |  | - |  |  | 21,555
Prepaid expenses and other current assets |  | 54,129 |  |  | (23,653) |  |  | 30,476
Investments |  | 426,845 |  |  | - |  |  | 426,845
Total current assets |  | 814,794 |  |  | (23,653) |  |  | 791,141
Leasehold improvements, property and equipment, net |  | 1,379,254 |  |  | (15,167) |  |  | 1,364,087
Restricted cash |  | 30,199 |  |  | - |  |  | 30,199
Operating lease assets |  | - |  |  | 2,363,020 |  |  | 2,363,020
Other assets |  | 19,332 |  |  | - |  |  | 19,332
Goodwill |  | 21,939 |  |  | - |  |  | 21,939
Total assets | $ | 2,265,518 |  | $ | 2,324,200 |  | $ | 4,589,718
Liabilities and shareholders' equity |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |
Accounts payable | $ | 113,071 |  | $ | - |  | $ | 113,071
Accrued payroll and benefits |  | 113,467 |  |  | - |  |  | 113,467
Accrued liabilities |  | 147,849 |  |  | (23,860) |  |  | 123,989
Unearned revenue |  | 70,474 |  |  | - |  |  | 70,474
Income tax payable |  | 5,129 |  |  | - |  |  | 5,129
Total current liabilities |  | 449,990 |  |  | (23,860) |  |  | 426,130
Commitments and contingencies |  |  |  |  |  |  |  |
Deferred rent |  | 330,985 |  |  | (330,985) |  |  | -
Current and long-term operating lease liabilities |  | - |  |  | 2,682,203 |  |  | 2,682,203
Deferred income tax liabilities |  | 11,566 |  |  | (831) |  |  | 10,735
Other liabilities |  | 31,638 |  |  | - |  |  | 31,638
Total liabilities |  | 824,179 |  |  | 2,326,527 |  |  | 3,150,706
Shareholders' equity: |  |  |  |  |  |  |  |
Preferred stock, $0.01 par value, 600,000 shares authorized, no shares issued as of December 31, 2018 and 2017, respectively |  | - |  |  | - |  |  | -
Common stock, $0.01 par value, 230,000 shares authorized, 35,973 and 35,852 shares issued as of December 31, 2018 and 2017, respectively |  | 360 |  |  | - |  |  | 360
Additional paid-in capital |  | 1,374,154 |  |  | - |  |  | 1,374,154
Treasury stock, at cost, 8,276 and 7,826 common shares at December 31, 2018 and 2017, respectively |  | (2,500,556) |  |  | - |  |  | (2,500,556)
Accumulated other comprehensive loss |  | (6,236) |  |  | - |  |  | (6,236)
Retained earnings |  | 2,573,617 |  |  | (2,327) |  |  | 2,571,290
Total shareholders' equity |  | 1,441,339 |  |  | (2,327) |  |  | 1,439,012
Total liabilities and shareholders' equity | $ | 2,265,518 |  | $ | 2,324,200 |  | $ | 4,589,718

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- Definition Schedule of New Accounting Pronouncements and Changes in Accounting Principles Impact On Balance Sheet [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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