Schedule II Statement of Cash Flows (Details) - USD ($) $ in Thousands			12 Months Ended
	Mar. 05, 2014	Jan. 11, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]
Net income			$ 27,358	$ 41,013	$ 20,342
Increase (Decrease) in Deferred Income Taxes			2,305	(1,181)	1,150
Share-based Compensation			1,974	649	133
Increase (Decrease) in Accrued Investment Income Receivable			(676)	(487)	(992)
Increase (Decrease) in Other Operating Assets			(3,897)	(1,493)	28
Increase (Decrease) in Other Operating Liabilities			2,557	(507)	19,769
Net Cash Provided by (Used in) Operating Activities			98,319	68,918	109,766
Proceeds from sales and maturities of investments available for sale			199,575	219,893	102,227
Payments to Acquire Property, Plant, and Equipment			(10,916)	(6,346)	(1,867)
Net Cash Provided by (Used in) Investing Activities			(67,015)	(91,466)	(146,154)
Payments Related to Tax Withholding for Share-based Compensation			(185)	(110)	0
Payments of Dividends			4,302	3,336	1,944
Proceeds from Issuance of Common Stock	$ 54,041	$ 3,591	0	54,041	3,591
Net Cash Provided by (Used in) Financing Activities			(7,909)	49,051	71
Cash and Cash Equivalents, Period Increase (Decrease)			23,395	26,503	(36,317)
Cash and Cash Equivalents, at Carrying Value			84,786	61,391	34,888	$ 71,205
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net income			27,358	41,013	20,342
Depreciation, Amortization and Accretion, Net			74	0	0
Realized Investment Gains (Losses)			(951)	0	0
Increase (Decrease) in Deferred Income Taxes			126	(44)	(49)
Share-based Compensation			1,974	649	133
Increase (Decrease) in Accrued Investment Income Receivable			(3)	0	0
Increase (Decrease) in Other Operating Assets			450	(548)	58
Increase (Decrease) in Notes Payable, Related Parties			2,557	(47,033)	(1,687)
Increase (Decrease) in Other Operating Liabilities			918	(352)	341
Net Cash Provided by (Used in) Operating Activities			32,503	(6,315)	19,138
Proceeds from sales and maturities of investments available for sale			19,633	0	0
Payments to Acquire Investments			(53,212)	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates			16,276	(36,608)	(20,785)
Payments to Acquire Property, Plant, and Equipment			(3,255)	(3,583)	0
Net Cash Provided by (Used in) Investing Activities			(20,558)	(40,191)	(20,785)
Payments Related to Tax Withholding for Share-based Compensation			(185)	(110)	0
Payments of Dividends			4,302	3,336	1,944
Proceeds from Issuance of Common Stock			0	54,041	3,591
Net Cash Provided by (Used in) Financing Activities			(4,487)	50,595	1,647
Cash and Cash Equivalents, Period Increase (Decrease)			7,458	4,089	0
Cash and Cash Equivalents, at Carrying Value			$ 11,555	$ 4,097	$ 8	$ 8