Note 8 - (Loss) Earnings Per Common Share (Details) - Reconciliation of Weighted Average Shares Outstanding Used in Calculation of Basic and Diluted (Loss) Earnings Per Common Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Apr. 05, 2015	Mar. 30, 2014
Reconciliation of Weighted Average Shares Outstanding Used in Calculation of Basic and Diluted (Loss) Earnings Per Common Share [Abstract]
Net (loss) as reported	$ (13,033)	$ 1,652
Less distributed and undistributed earnings allocable to restricted awarded holders	0	(54)
Less dividends declared attributed to restricted awarded holders	0us-gaap_DividendsShareBasedCompensation	(14)us-gaap_DividendsShareBasedCompensation
Net (loss) income allocable to common stockholders	$ (13,033)	$ 1,584
Basic (in Dollars per share)	$ (0.66)us-gaap_EarningsPerShareBasic	$ 0.08us-gaap_EarningsPerShareBasic
Diluted (in Dollars per share)	$ (0.66)us-gaap_EarningsPerShareDiluted	$ 0.08us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding – basic (in Shares)	19,650	19,417
Weighted average additional shares assuming conversion of potential common shares (in Shares)	0	29
Weighted average shares outstanding – diluted (in Shares)	19,650	19,446

Note 8 - (Loss) Earnings Per Common Share (Details) - Reconciliation of Weighted Average Shares Outstanding Used in Calculation of Basic and Diluted (Loss) Earnings Per Common Share (USD $)
In Thousands, except Per Share data, unless otherwise specified

3 Months Ended

Apr. 05, 2015

Mar. 30, 2014

Reconciliation of Weighted Average Shares Outstanding Used in Calculation of Basic and Diluted (Loss) Earnings Per Common Share [Abstract]

Net (loss) as reported

$ (13,033)us-gaap_IncomeLossFromContinuingOperations

$ 1,652us-gaap_IncomeLossFromContinuingOperations

Less distributed and undistributed earnings allocable to restricted awarded holders

0sypr_EarningsAllocableToRestrictedAwardHolders

(54)sypr_EarningsAllocableToRestrictedAwardHolders

Less dividends declared attributed to restricted awarded holders

0us-gaap_DividendsShareBasedCompensation

(14)us-gaap_DividendsShareBasedCompensation

Net (loss) income allocable to common stockholders

$ (13,033)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic

$ 1,584us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic

Basic (in Dollars per share)

$ (0.66)us-gaap_EarningsPerShareBasic

$ 0.08us-gaap_EarningsPerShareBasic

Diluted (in Dollars per share)

$ (0.66)us-gaap_EarningsPerShareDiluted

$ 0.08us-gaap_EarningsPerShareDiluted

Weighted average shares outstanding – basic (in Shares)

19,650us-gaap_WeightedAverageNumberOfSharesOutstandingBasic

19,417us-gaap_WeightedAverageNumberOfSharesOutstandingBasic

Weighted average additional shares assuming conversion of potential common shares (in Shares)

0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment

29us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment

Weighted average shares outstanding – diluted (in Shares)

19,650us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

19,446us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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Less distributed and undistributed earnings allocable to restricted award holders.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared and applicable to holders of share-based compensation, for example, but not limited to, non-vested shares, stock options, or restricted stock units.

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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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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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