Unpaid Loss and Loss Adjustment Expenses Property and Casualty (tables) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance at beginning of period, gross	$ 2,073
Paid related to:
Balance at end of period, gross	1,857	$ 2,292
Property, Liability and Casualty Insurance Product Line
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance at beginning of period, gross	2,073	1,329
Less reinsurance recoverable related to unpaid loss and loss adjustment expenses	0	79
Balance at beginning of period, net	1,857	2,213
Incurred related to:
Current year	0	0
Prior years	(710)	(1,628)
Paid related to:
Current year	0	0
Prior years	926	672
Balance at end of period, net	1,857	2,213	$ 2,073	$ 1,257
Plus reinsurance recoverable related to unpaid loss and loss adjustment expenses	$ 0	$ 79	$ 0	$ 72