Sale of Subsidiary (Balance Sheets of Discontinued Operations) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets of discontinued operations	$ 14	$ 633
Liabilities of discontinued operations	2,811	$ 3,323
Discontinued Operations, Disposed of by Sale | Avon
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill	8		$ 8
Other assets	6		625
Assets of discontinued operations	14		633
Accrued expenses and other liabilities	2,811		3,323
Liabilities of discontinued operations	$ 2,811		$ 3,323