Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)			12 Months Ended
	Jan. 02, 2019	Jan. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts			$ 4,786,000	$ 2,933,000
Revenue, information used to allocate transaction price			the determination of the transaction price is fixed based on the contract and/or purchase order.
Retail advertising expenses			$ 72,518,000	68,756,000	$ 61,187,000
Increase (decrease) in retained earnings	$ 503,000
Amount of the cumulative effect on retained earnings net of related income tax effect.	503,000
Increased Deferred Income Tax Asset	662,000
Increased Additional Paid In Capital	$ 159,000
Lease Agreements [Member]
Significant Accounting Policies [Line Items]
Decrease infinite lived intangible assets net				3,904,000
Accounts Payable and Accrued Liabilities [Member]
Significant Accounting Policies [Line Items]
Decrease in current deferred rent credit				7,170,000
Other Noncurrent Liabilities [Member]
Significant Accounting Policies [Line Items]
Decrease in long term deferred rent credit				74,464,000
Other Current Assets [Member]
Significant Accounting Policies [Line Items]
Prepaid expenses and other current assets				$ 2,552,000
Retail Segment [Member]
Significant Accounting Policies [Line Items]
Revenue, information used to determine transaction price			The transaction price for the majority of the Company’s retail sales is based on either: 1) the item’s stated price or 2) the stated price adjusted for the impact of a coupon which can only be applied to such transaction. To the extent that the Company charges customers for freight costs on e-commerce sales, the Company records such amounts in revenue. The Company excludes all sales taxes and value-added taxes from revenue.
Wholesale Segment [Member]
Significant Accounting Policies [Line Items]
Revenue, information used to allocate transaction price			the determination of the transaction price is fixed based on the contract and/or purchase order.
Kazzam LLC [Member]
Significant Accounting Policies [Line Items]
Equity method investment percentage in joint venture			26.00%	26.00%
Customer Payments [Member] | Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Increase (decrease) in retained earnings		$ 46,000
Amount of the cumulative effect on retained earnings net of related income tax effect.		46,000
Metallic Balloon Sales [Member] | Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Increase (decrease) in retained earnings		8,000
Amount of the cumulative effect on retained earnings net of related income tax effect.		8,000
Discount Sale [Member] | Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Increase (decrease) in retained earnings		40,000
Amount of the cumulative effect on retained earnings net of related income tax effect.		$ 40,000
Employee Stock Option [Member]
Significant Accounting Policies [Line Items]
Antidilutive securities excluded from calculation of earnings per share				2,394,868	2,392,150
Warrant [Member]
Significant Accounting Policies [Line Items]
Antidilutive securities excluded from calculation of earnings per share				596,000	596,000
Restricted Stock Units (RSUs) [Member]
Significant Accounting Policies [Line Items]
Antidilutive securities excluded from calculation of earnings per share				141,400	0
Convergram Mexico, S. De R.L. De C.V. [Member]
Significant Accounting Policies [Line Items]
Equity method investment percentage in joint venture			49.90%
Minimum [Member]
Significant Accounting Policies [Line Items]
Retail operations period of fiscal year			52 days
Retail operations period of fiscal quarter			13 days
Minimum [Member] | Retail Segment [Member]
Significant Accounting Policies [Line Items]
Royalty fee percentage			4.00%
Minimum [Member] | Wholesale Segment [Member]
Significant Accounting Policies [Line Items]
Receivables collection period			30 days
Maximum [Member]
Significant Accounting Policies [Line Items]
Retail operations period of fiscal year			53 days
Retail operations period of fiscal quarter			14 days
Maximum [Member] | Retail Segment [Member]
Significant Accounting Policies [Line Items]
Royalty fee percentage			6.00%
Maximum [Member] | Wholesale Segment [Member]
Significant Accounting Policies [Line Items]
Receivables collection period			120 days