Policy and Claim Reserves (Property and Casualty Reserve) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Policy and contract claims	$ 7,531
Reinsurance recoverable	1,780	$ 1,660
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]
Estimated claims and claim adjustment expenses for claims arising in prior years	(1,460)	(962)
Consolidated Property and Casualty Insurance Entity [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Policy and contract claims	7,531	9,645	$ 8,321
Reinsurance recoverable	1,184	1,380	839
Net balance at end of year	6,347	8,265	$ 7,482
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]
Provision for claims and claim adjustment expenses for claims arising in current year	35,659	30,900
Estimated claims and claim adjustment expenses for claims arising in prior years	(1,460)	(962)
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims	34,199	29,938
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year	31,265	25,339
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years	4,852	3,816
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	$ 36,117	$ 29,155