Summary of Significant Accounting Policies - Summary of Impact on Balance Sheet of New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 26, 2018	Dec. 27, 2017	Dec. 28, 2016	Dec. 30, 2015
Assets
Total assets	$ 450,226	$ 442,711
Current assets:
Deferred tax assets	11,709	7,167
Current liabilities:
Other accrued expenses and current liabilities	51,764	13,270
Total current liabilities	82,903	47,325
Other noncurrent liabilities	20,024	12,772
Total liabilities	184,990	167,761
Accumulated deficit	(110,888)	(98,427)
Total stockholders' equity	265,236	274,950	$ 265,182	$ 244,633
Total liabilities and stockholder’s equity	450,226	$ 442,711
Balances without adoption of Topic 606
Assets
Total assets	448,954
Current assets:
Deferred tax assets	10,437
Current liabilities:
Other accrued expenses and current liabilities	51,395
Total current liabilities	82,534
Other noncurrent liabilities	15,654
Total liabilities	180,251
Accumulated deficit	(107,421)
Total stockholders' equity	268,703
Total liabilities and stockholder’s equity	448,954
Accounting Standards Update 2014-09 | Adjustments
Assets
Total assets	1,272
Current assets:
Deferred tax assets	1,272
Current liabilities:
Other accrued expenses and current liabilities	369
Total current liabilities	369
Other noncurrent liabilities	4,370
Total liabilities	4,739
Accumulated deficit	(3,467)
Total stockholders' equity	(3,467)
Total liabilities and stockholder’s equity	$ 1,272