| 11. | Income Taxes |
| For the Years Ended December 31, | ||||||||
| 2017 | 2016 | |||||||
| Current | $ | 1,415,000 | $ | 986,000 | ||||
| Deferred | (378,000 | ) | 21,000 | |||||
| $ | 1,037,000 | $ | 1,007,000 | |||||
| December 31, | ||||||||
| 2017 | 2016 | |||||||
| Current deferred income taxes: | ||||||||
| Foreign tax credits | $ | - | $ | 3,000 | ||||
| Temporary differences: | ||||||||
| Inventory reserve | - | 101,000 | ||||||
| Accrued expenses and inventory | - | 334,000 | ||||||
| Current deferred income tax assets, net | $ | - | $ | 438,000 | ||||
| Non-current deferred income taxes: | ||||||||
| Temporary differences: | ||||||||
| Property and equipment | $ | (379,000 | ) | $ | (683,000 | ) | ||
| Intangible assets | (4,000 | ) | (4,000 | ) | ||||
| Marketable securities | 122,000 | 112,000 | ||||||
| Inventory reserve | 60,000 | - | ||||||
| Accrued expenses and inventory | 355,000 | - | ||||||
| Basis diffence in investments | (80,000 | ) | (129,000 | ) | ||||
| Foreign exchange | (8,000 | ) | (12,000 | ) | ||||
| Other | (26,000 | ) | (20,000 | ) | ||||
| State income taxes | (21,000 | ) | (71,000 | ) | ||||
| Non-current deferred income tax assets (liabilities) | 19,000 | (807,000 | ) | |||||
| Net deferred income tax assets (liabilities) | $ | 19,000 | $ | (369,000 | ) | |||
| For the Years Ended December 31, | ||||||||
| 2017 | 2016 | |||||||
| Income taxes based on U.S. statutory rate of 34% | $ | 1,247,000 | $ | 1,419,000 | ||||
| Non-deductible meals and entertainment | 6,000 | 5,000 | ||||||
| Deemed foreign repatriation | 468,000 | - | ||||||
| Domestic manufacturer's deduction | (97,000 | ) | (71,000 | ) | ||||
| Foreign taxes | (500,000 | ) | (169,000 | ) | ||||
| State taxes | 82,000 | 66,000 | ||||||
| Effect of Federal tax rate reduction from 35% to 21% | (53,000 | ) | - | |||||
| Other | (116,000 | ) | (243,000 | ) | ||||
| $ | 1,037,000 | $ | 1,007,000 | |||||
| For the Years Ended December 31, | ||||||||
| 2017 | 2016 | |||||||
| Balance as of January 1 | $ | - | $ | 194,000 | ||||
| Gross increase from tax positions taken during the year | - | - | ||||||
| Gross increase from tax positions taken during prior periods | - | - | ||||||
| Reductions to unrecognized tax benefits | - | (194,000 | ) | |||||
| Balance as of December 31 | $ | - | $ | - | ||||