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Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 USD ($) Customer / Customers | Jun. 30, 2017 USD ($) Customer / Customers | Jun. 30, 2018 USD ($) Customer / Customers | Jun. 30, 2017 USD ($) Customer / Customers | Dec. 31, 2017 USD ($)
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Percentage of inventory valuation | 50.00% |  | 50.00% |  |
Goodwill | $ 272,000 |  | $ 272,000 |  | $ 272,000
Stock based compensation |  |  | 225,000 | $ (73,000) |
Assets held for sale |  |  |  |  |
Gain on assets held for sale | 1,563,000 |  | 1,563,000 |  | 1,563,000
Accounts receivable, net of allowance for doubtful accounts | 9,863,000 |  | 9,863,000 |  | 7,681,000
Inventory, net of reserves | 39,045,000 |  | 39,045,000 |  | 39,205,000
Prepaid and other assets | 414,000 |  | 414,000 |  | 332,000
Property and equipment, net of accumulated depreciation | 9,996,000 |  | 9,996,000 |  | 10,928,000
Accounts payable and accrued expenses | 12,858,000 |  | 12,858,000 |  | 14,571,000
Deferred revenue | 929,000 |  | 929,000 |  | 1,452,000
Notes payable & capital lease obligations | 25,432,000 |  | 25,432,000 |  | 23,143,000
Deferred rent | 1,325,000 |  | 1,325,000 |  | 1,322,000
Wmi Group [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Assets held for sale |  |  |  |  | 10,082,000
Liabilities directly associated to assets held for sale |  |  |  |  | 2,795,000
Accounts receivable, net of allowance for doubtful accounts |  |  |  |  | 2,217,000
Inventory, net of reserves |  |  |  |  | 8,065,000
Prepaid and other assets |  |  |  |  | 485,000
Property and equipment, net of accumulated depreciation |  |  |  |  | 878,000
Accounts payable and accrued expenses |  |  |  |  | 3,701,000
Deferred revenue |  |  |  |  | 521,000
Notes payable & capital lease obligations |  |  |  |  | 11,000
Deferred rent |  |  |  |  | 125,000
ECC [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Goodwill | 109,000 |  | 109,000 |  | 109,000
NTW [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Goodwill | $ 163,000 |  | $ 163,000 |  | $ 163,000
Total net sales [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Concentration Risks | 45.70% | 57.20% | 49.20% | 53.50% |
Number of Customers | Customer / Customers | 2 | 3 | 2 | 3 |
Accounts receivable [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Concentration Risks |  |  | 49.80% | 55.50% |
Number of Customers | Customer / Customers |  |  | 2 | 3 |

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