Acquisitions (Details) (GPS Global [Member], USD $)	Dec. 31, 2014
GPS Global [Member]
Current assets	$ 217,000
Inventory	17,000
Property and equipment	47,000
Monitoring equipment	48,000
Other non-current assets	21,000
Intangible assets	4,856,000
Tradename	192,000
Accounts payable and accrued expenses	(215,000)
Loan payable	(753,000)
Goodwill	3,381,000
Total fair value of assets acquired	$ 7,811,000

Total fair value of assets acquired.

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Tradename.

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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