Operating Segments and Related Information - Schedule of Discontinued Operations Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Revenue, net of refund liability	$ 959	$ 0	$ (14)
Cost of sales (adjustments)	(300)	1,350	1,112
Selling, general and administrative expense	16	14	184
Depreciation of property, equipment and software assets	1	8	14
Pretax income (loss) from discontinued operations before income taxes	1,242	(1,372)	(1,324)
Income tax expense	0	0	0
Net income (loss) from discontinued operations	$ 1,242	$ (1,372)	$ (1,324)