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Share-Based Compensation - Award Activity (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jul. 02, 2016	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Restricted Stock
Number of Awards
Beginning outstanding balance (in shares)	170,335	170,335
Granted (in shares)		0
Vested (in shares)		(69,825)
Forfeited (in shares)		(1,950)
Ending outstanding balance (in shares)		98,560	170,335
Weighted Average Fair Value
Beginning outstanding balance (in dollars per share)	$ 14.60	$ 14.60
Granted (in dollars per share)		0.00
Vested (in dollars per share)		16.32
Forfeited (in dollars per share)		18.29
Ending outstanding balance (in dollars per share)		$ 13.19	$ 14.60
Restricted Stock Units (RSUs)
Number of Awards
Beginning outstanding balance (in shares)	140,179	140,179
Granted (in shares)		200,732
Vested (in shares)		(65,711)	0	0
Forfeited (in shares)		(4,750)
Ending outstanding balance (in shares)		270,450	140,179
Weighted Average Fair Value
Beginning outstanding balance (in dollars per share)	$ 10.00	$ 10.00
Granted (in dollars per share)		6.24
Vested (in dollars per share)		9.61
Forfeited (in dollars per share)		9.80
Ending outstanding balance (in dollars per share)		$ 7.32	$ 10.00
Performance Shares (2)
Number of Awards
Beginning outstanding balance (in shares)	126,306	126,306
Granted (in shares)		0
Vested (in shares)		(54,556)
Forfeited (in shares)		(4,750)
Ending outstanding balance (in shares)		67,000	126,306
Weighted Average Fair Value
Beginning outstanding balance (in dollars per share)	$ 9.00	$ 9.00
Granted (in dollars per share)		0.00
Vested (in dollars per share)		29.06
Forfeited (in dollars per share)		9.80
Ending outstanding balance (in dollars per share)		$ 9.35	$ 9.00
Stock options
Shares
Beginning outstanding balance (in shares)	75,900	75,900
Granted (in shares)		0	0	0
Exercised (in shares)		0	0	0
Forfeited (in shares)		0
Expired (in shares)		(900)
Ending outstanding balance (in shares)		75,000	75,900
Weighted Average Exercise Price
Beginning outstanding balance (in dollars per share)	$ 47.70	$ 47.70
Granted (in dollars per share)		0.00
Exercised (in dollars per share)		0.00
Forfeited (in dollars per share)		0.00
Expired (in dollars per share)		140.10
Ending outstanding balance (in dollars per share)		$ 46.60	$ 47.70
Employees and Directors No Longer Employed During Current Year | Performance Shares (2)
Number of Awards
Beginning outstanding balance (in shares)	46,941	46,941
Vested (in shares)	(46,941)
Ending outstanding balance (in shares)		0	46,941

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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.

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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).

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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.

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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.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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