Unpaid Losses and Loss Adjustment Expenses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development	$ 1,507	$ 171	$ 3,094	$ 206
Florida homeowners line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development	695		1,500
Commercial automobile line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development	$ 613	340	$ 1,500	535
Personal automobile line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development		262		331
Commercial multi-peril line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development		(270)		(274)
Other liability line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development		$ (95)		(136)
Workers’ compensation line
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior-year adverse (favorable) reserve development				$ (248)