Accumulated Other Comprehensive Income - Reclassification out of AOCI (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses)	$ 1,001,000	$ (414,000)	$ 760,000	$ (17,000)
Other-than-temporary impairment loss	0	0	(75,000)	0
Income (loss) from continuing operations before income tax (benefit) expense	(3,844,000)	(2,750,000)	(1,596,000)	(9,172,000)
Income tax expense (benefit)	162,000	(144,000)	(383,000)	300,000
Loss from continuing operations	(4,006,000)	(2,606,000)	(1,213,000)	(9,472,000)
Income from discontinued operations, net of taxes	0	417,000	0	1,397,000
Net loss	(4,006,000)	(3,361,000)	(1,213,000)	(15,875,000)
Unrealized Gains (Losses) on Available-for-Sale Investments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses)	6,000	3,000	(26,000)	11,000
Other-than-temporary impairment loss	0	0	0	0
Income (loss) from continuing operations before income tax (benefit) expense	6,000	3,000	(26,000)	11,000
Income tax expense (benefit)	0	0	0	0
Loss from continuing operations	6,000	3,000	(26,000)	11,000
Income from discontinued operations, net of taxes	0	(9,000)	0	(6,000)
Net loss	$ 6,000	$ (6,000)	$ (26,000)	$ 5,000