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Investments (Tables)
 12 Months Ended
Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities
The cost or amortized cost, gross unrealized gain or loss, and estimated fair value of the investments in securities classified as available for sale at December 31, 2016 and 2015 were as follows (dollars in thousands):
 
December 31, 2016
 
Cost or
Amortized
Cost
Gross Unrealized
Estimated
Fair Value 
 
 
Gains
Losses
Fixed maturity securities:
 
 
 
 
U.S. Government obligations
$
5,908

$
31

$
(36
)
$
5,903

State and local government
13,618

106

(205
)
13,519

Corporate debt
34,105

205

(254
)
34,056

Commercial mortgage and asset-backed
60,284

132

(731
)
59,685

Total fixed maturity securities available for sale
113,915

474

(1,226
)
113,163

Equity securities:
 
 
 
 
Common stocks - Public Utilities
159

25

(1
)
183

Common stocks - Banks, Trusts and Insurance Companies
681

85

(9
)
757

Common stocks - Industrial, miscellaneous and all other
3,443

256

(60
)
3,639

Total equity securities available for sale
4,283

366

(70
)
4,579

Total securities available for sale
$
118,198

$
840

$
(1,296
)
$
117,742

 
December 31, 2015
 
Cost or
Amortized
Cost
Gross Unrealized
Estimated
Fair Value 
 
Gains
Losses
Fixed maturity securities:
 
 
 
 
U.S. Government obligations
$
5,474

$
47

$
(13
)
$
5,508

State and local government
14,391

398

(6
)
14,783

Corporate debt
39,183

84

(483
)
38,784

Commercial mortgage and asset-backed
48,165

164

(311
)
48,018

Total fixed maturity securities available for sale
107,213

693

(813
)
107,093

Equity securities:
 
 
 
 
Common stocks - Public Utilities
122

20

(1
)
141

Common stocks - Banks, Trusts and Insurance Companies
503

150

(7
)
646

Common stocks - Industrial, miscellaneous and all other
2,716

836

(99
)
3,453

Total equity securities available for sale
3,341

1,006

(107
)
4,240

Total securities available for sale
$
110,554

$
1,699

$
(920
)
$
111,333
Schedule of Securities in Unrealized Loss Positions
The following table summarizes the aggregate fair value and gross unrealized losses, by security type, of the available-for-sale securities in unrealized loss positions. The table segregates the holdings based on the length of time that individual securities have been in a continuous unrealized loss position, as follows (dollars in thousands): 
 
December 31, 2016
 
Less than 12 months
 
Greater than 12 months
 
Total
 
No.
of
Issues
Fair Value of
Investments
with Unrealized
Losses
Gross
Unrealized
Losses
 
No.
of
Issues
Fair Value of
Investments
with Unrealized
Losses
Gross
Unrealized
Losses
 
No.
of
Issues
Fair Value of
Investments
with Unrealized
Losses
Gross
Unrealized
Losses
Fixed maturity securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. Government obligations
15

$
4,539

$
(36
)
 
—

$
—

$
—

 
15

$
4,539

$
(36
)
State and local government
29

8,217

(202
)
 
1

104

(3
)
 
30

8,321

(205
)
Corporate debt
22

9,031

(239
)
 
7

3,369

(15
)
 
29

12,400

(254
)
Commercial mortgage and asset-backed
59

38,048

(722
)
 
5

802

(9
)
 
64

38,850

(731
)
Total fixed maturity securities available for sale
125

59,835

(1,199
)
 
13

4,275

(27
)
 
138

64,110

(1,226
)
Equity securities:
 
 
 
 
 
 
 
 
 
 
 
Common stock
76

2,472

(61
)
 
2

66

(9
)
 
78

2,538

(70
)
Total equity securities available for sale
76

2,472

(61
)
 
2

66

(9
)
 
78

2,538

(70
)
Total securities
201

$
62,307

$
(1,260
)
 
15

$
4,341

$
(36
)
 
216

$
66,648

$
(1,296
)
 
December 31, 2015
 
Less than 12 months
 
Greater than 12 months
 
Total
 
No.
of
Issues
Fair Value of
Investments with
Unrealized Losses
Gross Unrealized Losses
 
No.
of
Issues
Fair Value of
Investments with
Unrealized Losses
Gross Unrealized Losses
 
No.
of
Issues
Fair Value of
Investments with
Unrealized Losses
Gross Unrealized Losses
Fixed maturity securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. Government obligations
7

$
2,580

$
(7
)
 
2

$
679

$
(6
)
 
9

$
3,259

$
(13
)
State and local government
8

2,688

(6
)
 
—

—

—

 
8

2,688

(6
)
Corporate debt
80

21,760

(438
)
 
12

3,618

(45
)
 
92

25,378

(483
)
Commercial mortgage and asset-backed
67

32,539

(258
)
 
5

2,175

(53
)
 
72

34,714

(311
)
Total fixed maturity securities available for sale
162

59,567

(709
)
 
19

6,472

(104
)
 
181

66,039

(813
)
Equity securities:
 
 
 
 
 
 
 
 
 
 
 
Common stock
86

782

(72
)
 
3

79

(35
)
 
89

861

(107
)
Total equity securities available for sale
86

782

(72
)
 
3

79

(35
)
 
89

861

(107
)
Total securities
248

$
60,349

$
(781
)
 
22

$
6,551

$
(139
)
 
270

$
66,900

$
(920
)
Summary of Investment Income
The Company’s sources of net investment income are as follows (dollars in thousands):
 
 
 December 31,
 
2016
 
2015
 
2014
Fixed maturity securities
$
2,370

 
$
2,110

 
$
1,289

Equity securities
98

 
92

 
78

Cash and short-term investments
21

 
5

 
9

Total investment income
2,489

 
2,207

 
1,376

Investment expenses
(316
)
 
(305
)
 
(201
)
Net investment income
$
2,173

 
$
1,902

 
$
1,175
Summary of Gross Realized Gains and Losses on Securities
The following table summarizes the gross realized gains and losses from sales or maturities of available-for-sale fixed maturity and equity securities, as follows (dollars in thousands):
 
 December 31,
 
2016
 
2015
 
2014
Fixed maturity securities:
 
 
 
 
 
Gross realized gains
$
587

 
$
92

 
$
47

Gross realized losses
(24
)
 
(6
)
 
(29
)
Total fixed maturity securities
563

 
86

 
18

Equity securities:
 
 
 
 
 
Gross realized gains
1,198

 
290

 
449

Gross realized losses
(396
)
 
(91
)
 
(50
)
Total equity securities
802

 
199

 
399

Total net investment realized gains
$
1,365

 
$
285

 
$
417
Summary of Amortized Cost and Fair Value of Securities
The table below summarizes the amortized cost and fair value of available-for-sale fixed maturity securities by contractual maturity at December 31, 2016. Actual maturities may differ from contractual maturities because certain borrowers have the right to call or prepay obligations with or without call or prepayment penalties (dollars in thousands):
 
Amortized
Cost
 
Estimated
Fair Value
Due in one year or less
$
9,650

 
$
9,656

Due after one year through five years
24,693

 
24,721

Due after five years through ten years
10,986

 
10,945

Due after ten years
8,302

 
8,156

Securities with contractual maturities
53,631

 
53,478

Commercial mortgage and asset backed
60,284

 
59,685

Total fixed maturity securities
$
113,915

 
$
113,163