Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum lease payments under non-cancellable operating leases that have initial or remaining lease terms in excess of one year as of December 31, 2018 are as follows:

Year of Payment	Amount
2019	$	613
2020	102
2021	10
Total	$	725

Schedule of Future Minimum Lease Payments for Capital Leases

The future minimum lease income under this non-cancellable sublease as of December 31, 2018 is as follows:

Year of Payment	Amount
2019	$	164
2020	—
Total	$	164

Schedule of Product Warranty Liability

Changes in the warranty liability from continuing operations in 2018, 2017 and 2016 are summarized below:

	2018		2017		2016
Aggregate product warranty liability at beginning of year	$	159	$	159	$	268
Net aggregate expense (income) related to product warranties	—		—		(109		)
Aggregate reductions for payments	—		—		—
Aggregate product warranty liability at end of year	$	159	$	159	$	159