Fair Value of Financial Instruments (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Jan. 02, 2016 |
Dec. 27, 2014 |
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| Fair Value of Financial Instruments (Textual) [Abstract] | |||
| Realized gain (loss) on available for sale securities | $ (395,000) | $ (1,102,000) | |
| Impairment charges | 276,000 | 875,000 | |
| Recognized expense related to deferred director stock units and phantom stock units liability | 10,000 | 17,000 | $ 35,000 |
| Nonrecurring [Member] | |||
| Fair Value of Financial Instruments (Textual) [Abstract] | |||
| Fair value adjustments for assets measured at fair value | 0 | ||
| Fair value adjustments for liabilities measured at fair value | 0 | ||
| Deferred director stock units and phantom stock units liability [Member] | |||
| Fair Value of Financial Instruments (Textual) [Abstract] | |||
| Recognized expense related to deferred director stock units and phantom stock units liability | $ 10,000 | $ 17,000 | |
| Phantom Share Units (PSUs) [Member] | |||
| Fair Value of Financial Instruments (Textual) [Abstract] | |||
| Vesting period | 3 years | ||
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- Definition Deferred director and phantom stock unit expense. No definition available.
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- Definition Fair value of financial instruments. No definition available.
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties. No definition available.
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- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties. No definition available.
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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