Investments (Tables)

The amortized cost and estimated fair values of our fixed maturities at September 30, 2018 were as follows:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Held to Maturity
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	76,078	$	5	$	2,120	$	73,963
Obligations of states and political subdivisions		156,055		6,890		1,721		161,224
Corporate securities		125,879		258		4,338		121,799
Mortgage-backed securities		42,221		—		1,033		41,188

Totals	$	400,233	$	7,153	$	9,212	$	398,174


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Available for Sale
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	44,192	$	4	$	1,668	$	42,528
Obligations of states and political subdivisions		81,704		1,696		726		82,674
Corporate securities		135,889		178		3,285		132,782
Mortgage-backed securities		276,973		37		9,967		267,043

Totals	$	538,758	$	1,915	$	15,646	$	525,027

The amortized cost and estimated fair values of our fixed maturities at December 31, 2017 were as follows:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Held to Maturity
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	71,736	$	804	$	547	$	71,993
Obligations of states and political subdivisions		137,581		11,162		112		148,631
Corporate securities		108,025		2,860		731		110,154
Mortgage-backed securities		49,313		516		157		49,672

Totals	$	366,655	$	15,342	$	1,547	$	380,450


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Available for Sale
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	44,759	$	20	$	730	$	44,049
Obligations of states and political subdivisions		128,478		3,942		303		132,117
Corporate securities		105,254		1,011		526		105,739
Mortgage-backed securities		259,923		445		3,327		257,041

Totals	$	538,414	$	5,418	$	4,886	$	538,946

Expected maturities may differ from contractual maturities because issuers of the securities may have the right to call or prepay obligations with or without call or prepayment penalties.


	Amortized Cost		Estimated Fair Value
	(in thousands)
Held to maturity
Due in one year or less	$	8,783	$	8,768
Due after one year through five years		70,790		70,505
Due after five years through ten years		136,673		135,068
Due after ten years		141,766		142,645
Mortgage-backed securities		42,221		41,188

Total held to maturity	$	400,233	$	398,174


Available for sale
Due in one year or less	$	39,265	$	39,465
Due after one year through five years		86,468		85,156
Due after five years through ten years		116,791		114,026
Due after ten years		19,261		19,337
Mortgage-backed securities		276,973		267,043

Total available for sale	$	538,758	$	525,027

The cost and estimated fair values of our equity securities at September 30, 2018 were as follows:


	Cost		Gross Gains		Gross Losses		Estimated Fair Value
	(in thousands)
Equity securities	$	49,416	$	9,207	$	650	$	57,973

The cost and estimated fair values of our equity securities at December 31, 2017 were as follows:


	Cost		Gross Gains		Gross Losses		Estimated Fair Value
	(in thousands)
Equity securities	$	44,219	$	6,505	$	279	$	50,445

Gross realized gains and losses from investments before applicable income taxes for the three and nine months ended September 30, 2018 and 2017 were as follows:


	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018		2017
	(in thousands)					(in thousands)
Gross realized gains:
Fixed maturities	$	5		$	87	$	16	$	138
Equity securities		2,976			513		6,246		4,142

		2,981			600		6,262		4,280

Gross realized losses:
Fixed maturities		25			39		70		69
Equity securities		(508	)		—		2,130		3

		(483	)		39		2,200		72

Net realized gains	$	3,464		$	561	$	4,062	$	4,208

We held fixed maturities with unrealized losses representing declines that we considered temporary at September 30, 2018 as follows:


	Less Than 12 Months				More Than 12 Months
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(in thousands)
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	65,701	$	1,017	$	48,064	$	2,771
Obligations of states and political subdivisions		58,935		1,586		16,385		861
Corporate securities		179,587		5,150		39,074		2,473
Mortgage-backed securities		144,615		3,200		159,788		7,800

Totals	$	448,838	$	10,953	$	263,311	$	13,905

We held fixed maturities and equity securities with unrealized losses representing declines that we considered temporary at December 31, 2017 as follows:


	Less Than 12 Months				More Than 12 Months
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(in thousands)
U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	24,024	$	287	$	33,987	$	990
Obligations of states and political subdivisions		10,223		120		14,127		295
Corporate securities		35,204		253		31,561		1,004
Mortgage-backed securities		100,534		817		124,062		2,667
Equity securities		4,292		279		—		—

Totals	$	174,277	$	1,756	$	203,737	$	4,956

We have compiled the following summary financial information for DFSC at September 30, 2018 and December 31, 2017 and for the three and nine months ended September 30, 2018 and 2017, respectively, from the financial statements of DFSC. The financial information of DFSC at September 30, 2018 and 2017 and for the three and nine months then ended is unaudited.


	September 30, 2018		December 31, 2017
	(in thousands)
Balance sheets:
Total assets	$	543,086	$	567,935

Total liabilities	$	460,292	$	487,604
Stockholders’ equity		82,794		80,331

Total liabilities and stockholders’ equity	$	543,086	$	567,935


	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
	(in thousands)				(in thousands)
Income statements:
Net income	$	1,519	$	837	$	4,464	$	2,122