| **Quarterly Financial Data (Unaudited) (Details) - USD ($)** | 3 Months Ended | 12 Months Ended |
|--------------------------------------------------------------|----------------|-----------------|
||
| **Quarterly Financial Information Disclosure [Abstract]**    |           |            |   |   |   |   |   |   |   |   |
| Revenue                                                      | $ 16,990,000   | $ 16,781,000    | $ 15,893,000 | $ 15,682,000 | $ 15,579,000 | $ 15,692,000 | $ 14,745,000 | $ 14,477,000 | $ 65,346,000 | $ 60,493,000 |
| Gross Profit                                                 | 3,387,000      | 3,038,000       | 2,730,000 | 2,533,000 | 2,340,000 | 2,308,000 | 2,199,000 | 2,112,000 | 11,688,000 | 8,959,000 |
| Operating income                                             | 958,000        | 763,000         | 515,000 | 259,000 | 205,000 | 268,000 | 225,000 | 66,000 | 2,496,000 | 764,000 |
| Other income (expense), net (2)                              | 1,466,000      | (34,000)        | (651,000) | (36,000) | (27,000) | (17,000) | (27,000) | 67,000 | 744,000 | (4,000) |
| Income before income taxes                                   | 2,424,000      | 729,000         | (136,000) | 223,000 | 178,000 | 251,000 | 198,000 | 133,000 | 3,240,000 | 760,000 |
| Income Tax Expense (Benefit)                                 | 5,814,000      | (292,000)       | 54,000 | (89,000) | 4,597,000 | (0.00) | (0.00) | (0.00) | 5,488,000 | 4,597,000 |
| Net income                                                   | $ 8,238,000    | $ 437,000       | $ (82,000) | $ 134,000 | $ 4,775,000 | $ 251,000 | $ 198,000 | $ 133,000 | $ 8,728,000 | $ 5,357,000 |
| Net income (loss) per share - basic (dollars per share)      | $ 0.86         | $ 0.05          | $ (0.01) | $ 0.01 | $ 0.50 | $ 0.03 | $ 0.02 | $ 0.01 | $ 0.91 | $ 0.56 |
| Net income (loss) per share - diluted (dollars per share)    | $ 0.82         | $ 0.04          | $ (0.01) | $ 0.01 | $ 0.48 | $ 0.03 | $ 0.02 | $ 0.01 | $ 0.87 | $ 0.54 |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
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| - Definition
Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
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| - Definition
The net result for the period of deducting operating expenses from operating revenues.
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No definition available.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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No definition available.
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