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Stock Options, Stock Grants and New Stock (Stock Options by Exercise Price Range) (Details) (USD $) | 12 Months Ended
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Jan. 03, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Number of Outstanding options (shares) | 157,295us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Number of exercisable options (shares) | 56,787us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
$11.55 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Range of Exercise Prices (dollars per share) | $ 11.55synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange1Member
Number of Outstanding options (shares) | 82,342us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange1Member
Weighted average exercise price (dollars per share) | $ 11.55us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange1Member
Weighted average remaining contractual life in years (years) | 6 years 0 months 17 days
Number of exercisable options (shares) | 42,342us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange1Member
Exercisable options, weighted average exercise price (dollars per share) | $ 11.55us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange1Member
$11.35 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Range of Exercise Prices (dollars per share) | $ 11.35synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange2Member
Number of Outstanding options (shares) | 27,996us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange2Member
Weighted average exercise price (dollars per share) | $ 11.35us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange2Member
Weighted average remaining contractual life in years (years) | 7 years 1 month 1 day
Number of exercisable options (shares) | 8,912us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange2Member
Exercisable options, weighted average exercise price (dollars per share) | $ 11.35us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange2Member
$13.70 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Range of Exercise Prices (dollars per share) | $ 13.70synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange3Member
Number of Outstanding options (shares) | 33,167us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange3Member
Weighted average exercise price (dollars per share) | $ 13.70us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange3Member
Weighted average remaining contractual life in years (years) | 8 years 1 month 1 day
Number of exercisable options (shares) | 5,533us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange3Member
Exercisable options, weighted average exercise price (dollars per share) | $ 13.70us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange3Member
$14.76 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Range of Exercise Prices (dollars per share) | $ 14.76synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange4Member
Number of Outstanding options (shares) | 13,790us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange4Member
Weighted average exercise price (dollars per share) | $ 14.76us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange4Member
Weighted average remaining contractual life in years (years) | 9 years 1 month 18 days
Number of exercisable options (shares) | 0us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = synl_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRange4Member

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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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