Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Estimated Lives of Assets

Depreciation is recorded using the straight-line method over the estimated useful lives of the assets as follows:

Machinery, manufacturing and    demonstration equipment	3-5 years
Computer equipment	3 years
Furniture	5 years
Leasehold improvements	Lesserof lease term or 3 to 10 years

Summary of Revenue Disaggregated by Type and Geography

The following table presents revenue disaggregated by type and geography:

	Three Months Ended
	March 31,
	2019		2018
	(in thousands)
	(unaudited)
U.S.
Services	$	133	$	21
Total U.S. revenue		133		21
Outside of U.S. ("OUS")
Systems		1,287		3,454
Instruments and accessories		546		1,111
Services		215		181
Total OUS revenue		2,048		4,746
Total
Systems		1,287		3,454
Instruments and accessories		546		1,111
Services		348		202
Total revenue	$	2,181	$	4,767

Summary of Details of Adjustment

The details of this adjustment are summarized below.

	Balance at		Adjustments Due		Balance at
	December 31, 2018		to ASC 842		January 1, 2019
	(unaudited)
	(In thousands)
Assets
Other long term assets	$	-	$	1,751	$	1,751
Liabilities and Stockholders' Equity
Accrued expenses	$	-	$	507	$	507
Other long term liabilities	$	-	$	1,244	$	1,244

Summary of Minimum Lease Payments

The following table presents the minimum lease payments as of March 31, 2019 (in thousands):

April 1, 2019 to March 31, 2020	$	959
April 1, 2020 to March 31, 2021		518
April 1, 2021 to March 31, 2022		441
April 1, 2022 to March 31, 2023		119
April 1, 2023 to March 31, 2024		18
Total minimum lease payments		2,055
Less: Amount of lease payments representing interest		(218	)
Present value of future minimum lease payments	$	1,837