Policy and Claim Reserves (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Insurance [Abstract]
Estimated claims and claim adjustment expenses for claims arising in prior years	$ 1,097,000	$ 751,000
Reserve for unpaid claims	430,000		$ 367,000
Policy and contract claims	$ 913,000		$ 903,000