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9. Accrued Expenses

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Accrued Expenses

Accrued expenses consisted of the following (in thousands):

		June 30, 2020				December 31, 2019
Accrued wages and benefits		$	416			$	538
Accrued accounts payable			398				566
Accrued sales and telecommunication taxes			449				529
Product warranty liability			43				37
Other			81				84
Total accrued expenses		$	1,387			$	1,754

The changes in aggregate product warranty liabilities for the year ended December 31, 2019 and six months ended June 30, 2020 were as follows (in thousands):

		Warranty Liabilities
Balance at January 1, 2019		$	16
Accrual for warranties			37
Adjustments related to pre-existing warranties			7
Warranty settlements			(23	)
Balance at December 31, 2019			37
Accrual for warranties			18
Warranty settlements			(12	)
Balance at June 30, 2020		$	43

Product warranty expense is included in cost of product revenue expense and totaled $10,000 and $5,000 for the three months ended June 30, 2020 and 2019, respectively, and $18,000 and $10,000 for the six months ended June 30, 2020 and 2019, respectively.

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- Definition

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