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Subsequent Events (Textual) (Details) (USD $) | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended
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Feb. 07, 2013 | Feb. 09, 2012 | Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011 | Jan. 02, 2014 Subsequent Event [Member] | Dec. 28, 2013 Stock Options [Member] | Dec. 29, 2012 Stock Options [Member] | Dec. 31, 2011 Stock Options [Member] | Feb. 07, 2013 2011 Plan [Member] Stock Options [Member] | Feb. 09, 2012 2011 Plan [Member] Stock Options [Member] | Jan. 24, 2011 2011 Plan [Member] Stock Options [Member] | Jan. 21, 2011 2011 Plan [Member] Stock Options [Member] | Dec. 28, 2013 2011 Plan [Member] Stock Options [Member] | Feb. 20, 2014 2011 Plan [Member] Stock Options [Member] Subsequent Event [Member] | Feb. 07, 2013 2011 Plan [Member] Stock Options [Member] Subsequent Event [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted (shares) | 40,594 | 36,740 |  | 100,000 |  |  |  |  |  | 40,594 | 36,740 | 100,000 |  |  | 13,790 |
Options granted, weighted average exercise price (dollars per share) | $ 13.70 | $ 11.35 |  |  | $ 11.55 |  |  |  |  | $ 13.70 | $ 11.35 | $ 11.55 |  |  | $ 14.76 |
Annual vesting rate (percent) |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% | 20.00% | 20.00% |
Period after option grant before options can be exercised (years) |  |  |  |  |  |  |  |  |  | 1 year |  |  | 1 year |  |  |
Options granted, weighted average fair value (dollars per share) | $ 6.30 | $ 5.03 | $ 7.19 | $ 6.40 | $ 7.93 |  |  |  |  | $ 6.30 | $ 5.03 | $ 7.93 |  |  | $ 6.70 |
Risk free interest rate (percent) |  |  |  |  |  |  |  |  |  | 2.00% | 2.04% | 3.34% |  |  | 2.00% |
Expected life (years) |  |  |  |  |  |  |  |  |  | 7 years | 7 years | 7 years |  |  | 7 years |
Expected volatility rate (percent) |  |  |  |  |  |  |  |  |  | 53.00% | 53.00% | 49.00% |  |  | 52.00% |
Expected dividend yield (percent) |  |  |  |  |  |  |  |  |  | 1.80% | 2.10% | 2.10% |  |  | 1.80% |
Share-based compensation expense |  |  | $ 331,362 | $ 337,750 | $ 276,553 |  | $ 249,000 | $ 228,000 | $ 111,000 |  |  |  |  |  |  | $ 92,000
Line of Credit Facility, Extension Period |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |

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- Definition Line of Credit Facility, Extension Period + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Annual Award Vesting Rights, Percentage + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Vesting Period Start, Period After Grant + References No definition available. + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Expected term of share-based compensation awards, 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded. + References No definition available. + Details
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