Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of allowance for doubtful accounts

Activity within the Company’s allowance for doubtful accounts for the periods presented is as follows:

	2019			2018
Beginning balance	$	2,390		$	2,334
(Subtractions) additions	(189		)	375
Deductions (write-offs/recoveries) from reserve	(612		)	(319		)
Ending balance	$	1,589		$	2,390

Summary of product warranty activity

The following table summarizes product warranty activity during 2019 and 2018:

	2019			2018
Beginning balance	$	1,916		$	2,074
Charges to expense	2,186			2,060
Costs incurred	(1,908		)	(2,218		)
Ending balance	$	2,194		$	1,916

Revenue and related development costs, customer-funded research and development costs

Revenue and related development costs from customer-funded research and development are as follows:

	Year Ended December 31,
	2019		2018
Customer-funded service sales	$	5,816	$	4,563
Customer-funded costs included in costs of service sales	4,373		3,087

Schedule of reconciliation of basic and diluted weighted average common shares outstanding

A reconciliation of the basic and diluted weighted average common shares outstanding is as follows:

	2019	2018
Weighted average common shares outstanding—basic	17,459	17,072
Dilutive common shares issuable in connection with stock plans	—	—
Weighted average common shares outstanding—diluted	17,459	17,072