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Note 2 - Revision of Previously Issued Financial Statements (Tables) | 3 Months Ended
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Mar. 31, 2018
Notes Tables |
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] |
|  | Three Months Ended March 31, 2017 |
|  | As Reported |  |  | Adjustment |  |  | As Re vised |
Condensed Consolidated Statement of Operations and Comprehensive Income Information |
Selling, general and administrative |  | $ | 45,733 |  |  | $ | 523 |  |  | $ | 46,256 |
Depreciation and amortization |  |  | 38,404 |  |  |  | 1,132 |  |  |  | 39,536 |
Total costs and expenses |  |  | 147,074 |  |  |  | 1,655 |  |  |  | 148,729 |
Income from operations |  |  | 60,353 |  |  |  | (1,655 | ) |  |  | 58,698 |
Income before income taxes |  |  | 53,034 |  |  |  | (1,655 | ) |  |  | 51,379 |
Income tax provision |  |  | 19,819 |  |  |  | (629 | ) |  |  | 19,190 |
Net income |  |  | 33,215 |  |  |  | (1,026 | ) |  |  | 32,189 |
Comprehensive income |  | $ | 33,217 |  |  | $ | (1,026 | ) |  | $ | 32,191 |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 5.86 |  |  | $ | (0.18 | ) |  | $ | 5.68 |
Diluted |  | $ | 5.80 |  |  | $ | (0.18 | ) |  | $ | 5.62 |
Condensed Consolidated Statement of Cash Flows Information |
Net income |  | $ | 33,215 |  |  | $ | (1,026 | ) |  | $ | 32,189 |
Depreciation and amortization |  |  | 38,404 |  |  |  | 1,132 |  |  |  | 39,536 |
Accounts receivable, net |  |  | 6,034 |  |  |  | 523 |  |  |  | 6,557 |
Change in deferred income taxes |  |  | 472 |  |  |  | (629 | ) |  |  | (157 | )
Net cash provided by operating activities |  | $ | 78,260 |  |  | $ | - |  |  | $ | 78,260 |

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- Definition Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794 + Details
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