Share-Based Compensation (Details)	9 Months Ended
	Oct. 03, 2015 $ / shares shares
Equity Incentive Plan 1998 [Member] | Market Condition Stock Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding (in shares) | shares	0
Shares, Granted (in shares) | shares	200,000
Shares, Outstanding (in shares) | shares	200,000
Shares, Options vested and expected to vest (in shares) | shares	200,000
Shares, Options exercisable (in shares) | shares	0
Weighted Average Exercise Price, Outstanding (in dollars per share)	$ 0
Weighted Average Exercise Price, Granted (in dollars per share)	3.34
Weighted Average Exercise Price, Outstanding (in dollars per share)	3.34
Weighted Average Exercise Price, Options vested and expected to vest (in dollars per share)	3.34
Weighted Average Exercise Price, Options exercisable (in dollars per share)	$ 0
Equity Incentive Plan 1998 [Member] | Service-Based Stock Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding (in shares) | shares	307,753
Shares, Exercised (in shares) | shares	(7,500)
Shares, Forfeited/cancelled (in shares) | shares	(48,700)
Shares, Outstanding (in shares) | shares	251,553
Shares, Options vested and expected to vest (in shares) | shares	244,053
Shares, Options exercisable (in shares) | shares	214,052
Weighted Average Exercise Price, Outstanding (in dollars per share)	$ 8.54
Weighted Average Exercise Price, Exercised (in dollars per share)	1.55
Weighted Average Exercise Price, Forfeited/cancelled (in dollars per share)	11.70
Weighted Average Exercise Price, Outstanding (in dollars per share)	8.14
Weighted Average Exercise Price, Options vested and expected to vest (in dollars per share)	8.26
Weighted Average Exercise Price, Options exercisable (in dollars per share)	$ 8.87
Supplemental Stock Plan 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding (in shares) | shares	82,600
Shares, Forfeited/cancelled (in shares) | shares	(25,700)
Shares, Outstanding (in shares) | shares	56,900
Shares, Options vested and expected to vest (in shares) | shares	56,900
Weighted Average Exercise Price, Outstanding (in dollars per share)	$ 11.33
Weighted Average Exercise Price, Forfeited/cancelled (in dollars per share)	11.28
Weighted Average Exercise Price, Outstanding (in dollars per share)	11.36
Weighted Average Exercise Price, Options vested and expected to vest (in dollars per share)	$ 11.36