Stockholders' Equity and Stock-Based Compensation - Ranges of Outstanding and Exercisable Options (Details) (USD $)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding (in shares)	1,382,993	1,909,039
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 4 months 28 days	4 years 0 months 7 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 13.92	$ 13.22
Options Exercisable, Number Exercisable (in shares)	1,052,110
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 13.15
$0.93-$7.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 0.93
Exercise Price, Upper Range Limit	$ 7.50
Options Outstanding, Number Outstanding (in shares)	156,237
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	1 year 3 months
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.67
Options Exercisable, Number Exercisable (in shares)	156,237
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.67
$8.81-$11.37 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 8.81
Exercise Price, Upper Range Limit	$ 11.37
Options Outstanding, Number Outstanding (in shares)	237,214
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 6 months 25 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.79
Options Exercisable, Number Exercisable (in shares)	237,214
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.79
$11.63-$14.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 11.63
Exercise Price, Upper Range Limit	$ 14.80
Options Outstanding, Number Outstanding (in shares)	146,135
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 10 months 20 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 13.68
Options Exercisable, Number Exercisable (in shares)	99,128
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 13.54
$14.88-$15.74 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 14.88
Exercise Price, Upper Range Limit	$ 15.74
Options Outstanding, Number Outstanding (in shares)	143,682
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.45
Options Exercisable, Number Exercisable (in shares)	75,875
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.47
$15.85-$15.98 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 15.85
Exercise Price, Upper Range Limit	$ 15.98
Options Outstanding, Number Outstanding (in shares)	170,943
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 11 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.92
Options Exercisable, Number Exercisable (in shares)	124,931
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.94
$16.00-$16.59 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 16.00
Exercise Price, Upper Range Limit	$ 16.59
Options Outstanding, Number Outstanding (in shares)	45,567
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 9 months 7 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 16.40
Options Exercisable, Number Exercisable (in shares)	9,214
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 16.32
$16.70-$16.70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 16.70
Exercise Price, Upper Range Limit	$ 16.70
Options Outstanding, Number Outstanding (in shares)	223,432
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 2 months 19 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 16.70
Options Exercisable, Number Exercisable (in shares)	206,048
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 16.70
$16.89-$18.27 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 16.89
Exercise Price, Upper Range Limit	$ 18.27
Options Outstanding, Number Outstanding (in shares)	155,483
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 5 months 15 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 17.54
Options Exercisable, Number Exercisable (in shares)	83,466
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 17.51
$18.51-$19.77 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 18.51
Exercise Price, Upper Range Limit	$ 19.77
Options Outstanding, Number Outstanding (in shares)	99,800
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 6 months 21 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 18.94
Options Exercisable, Number Exercisable (in shares)	55,686
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 19.06
$19.84-$19.84 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 19.84
Exercise Price, Upper Range Limit	$ 19.84
Options Outstanding, Number Outstanding (in shares)	4,500
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 1 month 20 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 19.84
Options Exercisable, Number Exercisable (in shares)	4,311
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 19.84
$0.93-$19.84 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, Lower Range Limit	$ 0.93
Exercise Price, Upper Range Limit	$ 19.84
Options Outstanding, Number Outstanding (in shares)	1,382,993
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 4 months 27 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 13.92
Options Exercisable, Number Exercisable (in shares)	1,052,110
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 13.15