Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 118,169	$ 113,356
Depreciation and amortization	4,309	3,286
Income (loss) from operations	(13,316)	(1,874)
Assets	726,915		$ 401,521
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Income (loss) from operations	(4,556)	(3,068)
Assets	20,793		13,526
U. S. Wholesale
Segment Reporting Information [Line Items]
Net sales	90,795	87,392
Depreciation and amortization	3,091	2,302
U. S. Wholesale | Operating Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	(5,528)	2,235
Assets	597,784		281,398
International
Segment Reporting Information [Line Items]
Net sales	21,846	21,228
Depreciation and amortization	1,162	951
International | Operating Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	(3,220)	(1,157)
Assets	107,726		105,984
Retail Direct
Segment Reporting Information [Line Items]
Net sales	5,528	4,736
Depreciation and amortization	56	33
Retail Direct | Operating Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	(12)	$ 116
Assets	$ 612		$ 613