Business Segments, Geographic Data, and Sales by Major Customers - Information by Segment and Reconciliation to Reported Amounts (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 280,130	$ 236,699	$ 446,138	$ 435,484
Income (Loss) from Operations	35,662	20,043	(7,028)	(27,755)
Depreciation and Amortization Expense	6,998	6,563	14,471	13,991
Assets	479,641		479,641		$ 342,841
U.S. and Canada
Segment Reporting Information [Line Items]
Net sales	165,087	133,481	271,022	263,397
Income (Loss) from Operations	26,557	12,029	193	(17,373)
Depreciation and Amortization Expense	4,405	4,823	9,717	10,125
Assets	296,349		296,349		223,877
International
Segment Reporting Information [Line Items]
Net sales	39,251	37,902	59,297	77,245
Income (Loss) from Operations	5,958	2,919	(1,159)	(6,764)
Depreciation and Amortization Expense	1,094	1,312	2,110	2,886
Assets	112,892		112,892		108,669
Halloween
Segment Reporting Information [Line Items]
Net sales	75,792	65,316	115,819	94,842
Income (Loss) from Operations	3,147	5,095	(6,062)	(3,618)
Depreciation and Amortization Expense	1,499	$ 428	2,644	$ 980
Assets	$ 70,400		$ 70,400		$ 10,295