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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Taxes |
Schedule of income tax expense (benefit) |
|  | 2016 |  | 2015 |
Current taxes - Federal |  | $ | 240,000 |  | $ | (297,000 | )
Current taxes - State |  | 10,000 |  | 6,000 |
Current taxes - Foreign |  | (13,000 | ) | 29,000 |
Deferred taxes - Federal |  | (167,000 | ) | (107,000 | )
Deferred taxes - State |  | 10,000 |  | 53,000 |
Deferred taxes - Foreign |  | (45,000 | ) | — |
Income tax expense (benefit) |  | $ | 35,000 |  | $ | (316,000 | )
Schedule of statutory rate reconciliation |
|  | 2016 |  | 2015 |
Statutory federal tax provision (benefit) |  | $ | 27,000 |  | $ | (302,000 | )
State income taxes |  | (32,000 | ) | 3,000 |
Effect of foreign operations |  | 107,000 |  | (5,000 | )
Uncertain tax positions |  | 2,000 |  | (3,000 | )
Income tax credits |  | (134,000 | ) | (125,000 | )
Valuation allowance |  | 49,000 |  | 86,000 |
Permanent differences |  | 16,000 |  | 30,000 |
Other |  | — |  | — |
Income tax expense (benefit) |  | $ | 35,000 |  | $ | (316,000 | )
Schedule of income (loss) from operations before income taxes |
|  | 2016 |  | 2015 |
Domestic |  | $ | 486,425 |  | $ | (968,793 | )
Foreign |  | (407,651 | ) | 81,371 |
Total |  | $ | 78,774 |  | $ | (887,422 | )
Schedule of deferred tax assets (liabilities) |
|  | 2016 |  | 2015 |
Deferred Tax |  |  |  |  |
Allowance for uncollectable accounts |  | $ | 317,000 |  | $ | 115,000 |
Inventories reserve |  | 242,000 |  | 270,000 |
Accrued vacation |  | 362,000 |  | 360,000 |
Non-compete amortization |  | 56,000 |  | 191,000 |
Stock-based compensation and equity appreciation rights |  | 29,000 |  | 111,000 |
Net operating loss carryforwards |  | 134,000 |  | 113,000 |
Tax credit carryforwards |  | 242,000 |  | 231,000 |
Other |  | 188,000 |  | 180,000 |
|  | 1,570,000 |  | 1,571,000 |
Valuation allowance |  | (135,000 | ) | (86,000 | )
Deferred tax assets |  | 1,435,000 |  | 1,485,000 |
Prepaid expenses |  | (323,000 | ) | (481,000 | )
Property and equipment |  | (569,000 | ) | (663,000 | )
Deferred tax liabilities |  | (892,000 | ) | (1,144,000 | )
Net deferred tax assets |  | $ | 543,000 |  | $ | 341,000 |
Schedule of changes in total gross unrecognized tax benefit liabilities, excluding accrued interest |
Balance as of December 31, 2014 |  | $ | 56,000 |
Tax positions related to 2015: |  |  |
Additions based on tax positions related to the current year |  | 12,000 |
Additions based on tax positions related to the prior year |  | 2,000 |
Reductions based on tax positions related to a prior year |  | (9,000 | )
Statute of limitations |  | (10,000 | )
Balance as of December 31, 2015 |  | 51,000 |
Tax positions related to current year: |  |  |
Additions based on tax positions related to the current year |  | 15,000 |
Additions based on tax positions related to a prior year |  | 5,000 |
Reductions based on tax positions related to a prior year |  | (6,000 | )
Statute of limitations |  | (13,000 | )
Balance as of December 31, 2016 |  | $ | 52,000 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 + Details
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