Discontinued Operations - Held for Disposal (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Accounts receivable, net	$ 140	$ 220
Inventories	45	1,292
Prepaid expenses and other current assets	31	12
Current assets of discontinued operations	216	1,524
Property and equipment, net	0	300
Other assets	105	124
Assets of discontinued operations	105	424
Total assets of discontinued operations	321	1,948
Liabilities
Accounts payable	45	375
Accrued expenses and other current liabilities	843	2,046
Current liabilities of discontinued operations	888	2,421
Other liabilities	674	0
Net liabilities of discontinued operations	$ 1,241	$ 473