Investments - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fixed Maturity Securities:
Fixed maturity securities, amortized cost	$ 121,914	$ 113,915
Fixed maturity securities, gross unrealized gain	707	474
Fixed maturity securities, gross unrealized loss	(738)	(1,226)
Fixed maturity securities, estimated fair value	121,883	113,163
Equity Securities
Equity securities, amortized cost	9,386	4,283
Equity securities, gross unrealized gain	923	366
Equity securities, gross unrealized loss	(152)	(70)
Equity securities, estimated fair value	10,157	4,579
Securities, cost or amortized cost	131,300	118,198
Securities, gross unrealized gain	1,630	840
Securities, gross unrealized loss	(890)	(1,296)
Securities, estimated fair value	132,040	117,742
U.S. Government obligations
Fixed Maturity Securities:
Fixed maturity securities, amortized cost	9,252	5,908
Fixed maturity securities, gross unrealized gain	26	31
Fixed maturity securities, gross unrealized loss	(43)	(36)
Fixed maturity securities, estimated fair value	9,235	5,903
State and local government
Fixed Maturity Securities:
Fixed maturity securities, amortized cost	16,009	13,618
Fixed maturity securities, gross unrealized gain	246	106
Fixed maturity securities, gross unrealized loss	(53)	(205)
Fixed maturity securities, estimated fair value	16,202	13,519
Corporate debt
Fixed Maturity Securities:
Fixed maturity securities, amortized cost	40,219	34,105
Fixed maturity securities, gross unrealized gain	279	205
Fixed maturity securities, gross unrealized loss	(162)	(254)
Fixed maturity securities, estimated fair value	40,336	34,056
Commercial mortgage-backed and other asset-backed
Fixed Maturity Securities:
Fixed maturity securities, amortized cost	56,434	60,284
Fixed maturity securities, gross unrealized gain	156	132
Fixed maturity securities, gross unrealized loss	(480)	(731)
Fixed maturity securities, estimated fair value	$ 56,110	$ 59,685

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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