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Stockholders' Equity and Stock-Based Compensation Non-employee Director Restricted Stock Awards (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Summary of non-vested and restricted stock awards [Roll Forward]
Shares granted (in shares)	454,916
Director Restricted Stock Plan [Member]
Summary of non-vested and restricted stock awards [Roll Forward]
Ending balance nonvested (in shares)	111,359	152,504	155,916
Nonvested, Weighted Average Grant Date Fair Value (in usd per share)	$ 12.69	$ 12.22	$ 10.75
Shares granted (in shares)	43,421	46,910	25,678
Shares granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 14.51	$ 13.80	$ 19.67
Restrictions Lapsed (in shares)	(81,031)	(50,322)	0
Restrictions Lapsed, Weighted Average Grant Date Fair Value (in dollars per share)	$ 11.55	$ 12.25	$ 0.00
Forfeited in Period (in shares)	(3,535)	0	0
Shares forfeited, Weighted Average Grant Date Fair Value (in dollars per share)	$ 14.51	$ 0.00	$ 0.00
Beginning balance nonvested (in shares)	152,504	155,916	130,238
Nonvested, Weighted Average Grant Date Fair Value (in usd per share)	$ 14.18	$ 12.69	$ 12.22

X

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Restrictions Lapsed

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Restrictions Lapsed, Weighted Average Grant Date Fair Value

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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 (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ 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)(2)(iii)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ 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)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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