Revenues

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

REVENUES

Our revenues from contracts with customers disaggregated by revenue source, excluding sales-based taxes, were as follows (in thousands):



	Three Months Ended March 31,
	2020		2019
Product sales	$	89,882	$	80,132
Extended warranties and services	1,935		2,469
Other⁽¹⁾	1,905		1,799
Net sales	$	93,722	$	84,400

⁽¹⁾ Other revenue is primarily freight and delivery, royalty income and subscription revenue.

Our revenues disaggregated by geographic region, based on ship-to address, were as follows (in thousands):



	Three Months Ended March 31,
	2020		2019
United States	$	79,950	$	70,188
Canada	6,249		7,929
All other	7,523		6,283
Net sales	$	93,722	$	84,400

As of March 31, 2020, estimated revenue expected to be recognized in the future totaled $13.8 million, primarily related to customer order backlog, which includes firm orders for future shipment to our Retail customers, as well as unfulfilled consumer orders within the Direct channel. Direct orders of $8.0 million and Retail orders of $5.8 million comprised our backlog as of March 31, 2020. The estimated future revenues are net of contractual rebates and consideration payable for applicable Retail customers, and net of current promotional programs and sales discounts for our Direct customers.

The following table provides information about our liabilities from contracts with customers, primarily customer deposits and deferred revenue for which advance consideration is received prior to the transfer of control. Revenue is recognized when transfer of control occurs. All customer deposits and deferred revenue received are short-term in nature. Significant changes in contract liabilities balances, including revenue recognized in the reporting period that was included in opening contract liabilities, are shown below (in thousands):



	Three Months Ended March 31,
	2020			2019
Balance, beginning of period	$	1,225		$	816
Cash additions	2,099			161
Revenue recognition	(1,274		)	(498		)
Balance, end of period	$	2,050		$	479