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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Schedule of useful lives of property and equipment |
Land improvements |  | 15 | - | 40 | years
Buildings |  | 30 | - | 40 | years
Building improvements |  | 5 | - | 40 | years
Furniture |  | 5 | - | 10 | years
Equipment |  | 3 | - | 20 | years
Schedule of reconciliation of number of shares (denominator) used in basic and diluted earnings per share computations | The following is a reconciliation of the number of shares (denominator) used in the basic and diluted earnings per share computations (in thousands, except per share data):
|  | Years ended December 31, |
|  | 2019 |  | 2018 |  | 2017 |
|  |  |  | Per Share |  |  |  | Per Share |  |  |  | Per Share |
|  | Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount |
Basic |  | 18,025 |  | $ | 1.77 |  | 17,846 |  | $ | 1.91 |  | 17,585 |  | $ | 1.45 |
Effect of dilutive stock options |  | 659 |  |  | (0.07) |  | 728 |  |  | (0.08) |  | 782 |  |  | (0.06) |
Diluted |  | 18,684 |  | $ | 1.70 |  | 18,574 |  | $ | 1.83 |  | 18,367 |  | $ | 1.39 |
Schedule of antidilutive options |
|  |  | Years ended December 31, |
|  |  | 2019 |  | 2018 |  | 2017 |
Options to purchase shares of common stock |  |  |  | 843,980 |  |  | 697,968 |  |  | 203,667 |
Exercise prices |  |  | $ | 44.55 | - | $ | 59.07 |  | $ | 39.82 | - | $ | 47.81 |  | $ | 45.32 | - | $ | 46.73 |
Expiration dates (month/year) |  |  |  | 11/27-12/29 |  |  | 11/27-12/28 |  | 11/27-12/27 |

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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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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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