Summary of significant accounting policies (Tables)

12 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Schedule of Concentrations of Risk

During the years ended March 31, 2020, December 31, 2018 and 2017, and the three month transition period ended March 31, 2019, two customers individually accounted for greater than 10% of the Company’s net sales as disclosed below:

	Year ended March 31,		Three months ended March 31, (transition period)		Year ended December 31,
	2020		2019		2018		2017
Walmart	31	%	36	%	30	%	29	%
Target	22	%	17	%	21	%	25	%

Customers that individually accounted for greater than 10% of the Company’s accounts receivable at the end of the periods are as presented:

	March 31, 2020		March 31, 2019		December 31, 2018
Target	22	%	19	%	27	%
Walmart	20	%	27	%	20	%

Schedule of Useful Lives by Major Asset Class

Useful lives by major asset class are as follows:

	Estimated useful lives
Machinery, equipment and software	3-5 years
Leasehold improvements	5 years
Furniture and fixtures	2-5 years
Store fixtures	2-3 years

Net Sales in United States and Outside of United States

During the years ended March 31, 2020, December 31, 2018 and 2017, and the transition period for the three months ended March 31, 2019, net sales in the United States and outside of the United States were as follows (in thousands):

	Year ended March 31,		Three months ended March 31, (transition period)		Year ended December 31,
	2020		2019		2018		2017
U.S.	$	255,284	$	59,797	$	241,159	$	243,299
International	27,567		6,344		26,276		26,589
Total net sales	$	282,851	$	66,141	$	267,435	$	269,888

Property and Equipment in United States and Outside of United States

As of March 31, 2020, March 31, 2019, and December 31, 2018, the Company had property and equipment in the United States and outside of the United States as follows (in thousands):

	March 31, 2020		March 31, 2019		December 31, 2018
U.S.	$	16,845	$	15,491	$	21,236
International	326		515		568
Total property and equipment, net	$	17,171	$	16,006	$	21,804

Reconciliation of Sales Allowances

A reconciliation of the beginning and ending amounts of the reserve for sales adjustments for the years ended March 31, 2020, December 31, 2018 and 2017, and the transition period for the three months ended March 31, 2019 is as follows (in thousands):

Balance as of December 31, 2016	11,927
Charges	25,680
Deductions	(29,149		)
Balance as of December 31, 2017	$	8,458
Charges	26,971
Deductions	(27,655		)
Balance as of December 31, 2018	7,774
Charges	6,787
Deductions	(8,016		)
Balance as of March 31, 2019	6,545
Charges	29,576
Deductions	(28,508		)
Balance as of March 31, 2020	$	7,613