Statutory Accounting Practices Disclosure - Net Income (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 03, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statutory Accounting Practices [Line Items]
Net Income (Loss) Attributable to Parent		$ (10,517)	$ 3,423	$ 9,841	$ 2,951	$ 13,802	$ 8,083	$ 5,275	$ 198	$ 5,698	$ 27,358	$ 41,013
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Commissions										17,486	339	(12,258)
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Deferred Income Taxes										(3,255)	(2,518)	64
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Deferred Policy Acquisition Costs										(6,342)	(4,962)	(788)
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Allowance for Doubtful Accounts										(24)	97	5
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Assessments										0	0	(78)
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Prepaid Expenses										(538)	131	(136)
Statutory Accounting Practices, GAAP to Statutory, Increase (Decrease) Due to Other, net										166	0	0
Statutory Accounting Practices, GAAP TO Statutory, Increase (Decrease) Due to Operations of Non-Statutory Subsidiaries										(10,621)	(10,077)	(14,915)
Statutory Accounting Practices, Statutory Net Income Amount										6,083	10,520	12,907
Family Security Holdings (FSH)
Statutory Accounting Practices [Line Items]
Net Income (Loss) Attributable to Parent	$ 77
Statutory Accounting Practices, Statutory Net Income Amount										0	152	0
Interboro Insurance Company
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount										$ 3,513	$ 0	$ 0