Revenues (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

ur 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

Contract with Customer, Asset and Liability [Table Text Block]

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