Note 18 - Notes Payable (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
Oct. 01, 2013	Sep. 30, 2018
Mortgage Note Payable [Member]
Other Notes Payable, Total	$ 3,700
Debt Instrument, Term	10 years
Repayments of Long-term Debt, Total		$ 71
Long-term Debt, Total		3,300
Long-term Debt, Current Maturities, Total		97
Long-term Debt, Excluding Current Maturities, Total		$ 3,200
Mortgage Note Payable [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Convertible Debt [Member] \| International Electronic Devices, Inc. [Member]
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Debt Instrument, Convertible, Conversion Price		$ 0.001
Barakel, LLC [Member]
Payments to Acquire Real Estate, Total	$ 5,100

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term notes payable classified as other.

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- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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