Income Taxes (Schedule of Income Tax Effects of Changes in Temporary Differences) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Deferred policy acquisition costs	$ (20)	$ (3)
Unearned premiums	(26)	(62)
General expenses	1	62
Depreciation	(3)	(4)
Claims liabilities	15	(44)
AMT credit	787	(23)
Impact of repeal of special provision on pre-1984 policyholder surplus	(16)	0
Unrealized gains on equity securities	(43)	0
Deferred income tax expense (benefit)	$ 695	$ (74)