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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | The components of the provision for income taxes as of December 31, 2018, 2017 and 2016 consist of the following:
|  | YEARS ENDED DECEMBER 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 13,000 |  |  | $ | 55,000 |  |  | $ | 24,000 |
State |  |  | 389,000 |  |  |  | 109,000 |  |  |  | 146,000 |
Total current |  |  | 402,000 |  |  |  | 164,000 |  |  |  | 170,000 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 259,000 |  |  |  | (1,335,000 | ) |  |  | 680,000 |
State |  |  | (210,000 | ) |  |  | 68,000 |  |  |  | 93,000 |
Total deferred |  |  | 49,000 |  |  |  | (1,267,000 | ) |  |  | 773,000 |
|  | $ | 451,000 |  |  | $ | (1,103,000 | ) |  | $ | 943,000 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | Significant components of the Company’s deferred tax liabilities and assets as of December 31, 2018 and 2017 are as follows:
|  | DECEMBER 31, |
|  | 2018 |  |  | 2017 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Property and equipment |  | $ | (3,566,000 | ) |  | $ | (5,009,000 | )
Total deferred tax liabilities |  |  | (3,566,000 | ) |  |  | (5,009,000 | )
Deferred tax assets: |  |  |  |  |  |  |  |
Net operating loss carryforwards |  |  | 80,000 |  |  |  | 1,421,000 |
Accruals and allowances |  |  | 275,000 |  |  |  | 157,000 |
Tax credits |  |  | 194,000 |  |  |  | 438,000 |
Other – net |  |  | 206,000 |  |  |  | 186,000 |
Capital loss carryover |  |  | 948,000 |  |  |  | 959,000 |
Total deferred tax assets |  |  | 1,703,000 |  |  |  | 3,161,000 |
Valuation allowance |  |  | (1,096,000 | ) |  |  | (1,062,000 | )
Deferred tax assets net of valuation allowance |  |  | 607,000 |  |  |  | 2,099,000 |
Net deferred tax liabilities |  | $ | (2,959,000 | ) |  | $ | (2,910,000 | )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | These amounts are presented in the financial statements as follows:
|  | DECEMBER 31, |
|  | 2018 |  |  | 2017 |
Deferred income taxes (non-current) |  | $ | (2,959,000 | ) |  | $ | (2,910,000 | )
|  | $ | (2,959,000 | ) |  | $ | (2,910,000 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] | The (benefit) provision for income taxes differs from the amount computed by applying the U.S. federal statutory tax rate (21% in 2018, and 34% in 2017 and 2016) to income before taxes as follows:
|  | YEARS ENDED DECEMBER 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Computed expected federal income tax |  | $ | 313,000 |  |  | $ | 279,000 |  |  | $ | 637,000 |
State income taxes, net of federal benefit |  |  | 125,000 |  |  |  | 28,000 |  |  |  | 169,000 |
Non-deductible expenses |  |  | (12,000 | ) |  |  | 41,000 |  |  |  | 42,000 |
Impact of US Tax Reform |  |  | - |  |  |  | (1,546,000 | ) |  |  | - |
Change in valuation allowance |  |  | 34,000 |  |  |  | 180,000 |  |  |  | 25,000 |
Other |  |  | (9,000 | ) |  |  | (85,000 | ) |  |  | 70,000 |
|  | $ | 451,000 |  |  | $ | (1,103,000 | ) |  | $ | 943,000 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] | A reconciliation of the beginning and ending amount of unrecognized tax benefit is as follows:
|  | YEARS ENDED DECEMBER 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Balance at beginning of year |  | $ | - |  |  | $ | - |  |  | $ | - |
Additions based on tax positions of prior years |  |  | 87,000 |  |  |  | - |  |  |  | - |
Balance at end of year |  | $ | 87,000 |  |  | $ | - |  |  | $ | - |

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