Related Party Transactions (Schedule of impact of consolidating Battle Creek into our consolidated balance sheets) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Assets:
Accrued investment income		$ 1,832	$ 1,996
Property and equipment		6,019	5,877
Other assets		3,253	3,482
Total assets		441,398	376,988
Liabilities:
Unpaid losses and loss adjustment expenses		63,376	45,890	$ 72,619
Unearned premiums		99,954	63,262	$ 92,194
Reinsurance payable		3,099	428
Total liabilities		181,832	121,415
Equity:
Non-controlling interest		3,154	3,178
Total equity		259,566	255,573
Total liabilities and equity		441,398	376,988
Battle Creek [Member]
Assets:
Cash and cash equivalents (overdraft)		606	(726)
Investments		4,395	4,364
Premiums and agents' balances receivable		4,522	4,055
Reinsurance recoverables on losses	[1]	24,279	20,932
Accrued investment income		32	29
Deferred income tax asset, net		395	389
Property and equipment		363	370
Other assets		41	54
Total assets		34,633	29,467
Liabilities:
Unpaid losses and loss adjustment expenses		9,575	7,995
Unearned premiums		14,731	12,937
Notes payable	[1]	3,000	3,000
Reinsurance payable	[1]	3,263	965
Accrued expenses and other liabilities		910	1,392
Total liabilities		31,479	26,289
Equity:
Non-controlling interest		3,154	3,178
Total equity		3,154	3,178
Total liabilities and equity		$ 34,633	$ 29,467

[1] Amount eliminated in consolidation.