Reserves for Unpaid Losses and Loss Adjustment Expenses (Narrative) (Details) - USD ($) $ in Thousands |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
$ 7,000
|
$ 5,200
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
$ 10,000
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
(6,953)
|
(5,203)
|
9,954
|
| Loss Adjustment Expenses Recognized In 2010 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
3,300
|
| Loss Adjustment Expenses Recognized In 2011 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
2,400
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
1,700
|
| Loss Adjustment Expenses Recognized In 2012 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
1,100
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
4,400
|
5,000
|
| Loss Adjustment Expenses Recognized In 2013 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
7,200
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
1,500
|
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
|
|
10,000
|
| Loss Adjustment Expenses Recognized In 2014 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
7,400
|
|
|
| Standard Commercial P & C Business Unit [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
3,700
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
(5,400)
|
(4,100)
|
|
| Workers Compensation Business Unit [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
1,500
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
(2,000)
|
(1,900)
|
|
| Specialty Commercial Segment [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
2,600
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
(2,000)
|
|
|
| MGA Commercial Products [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
4,700
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
(200)
|
|
|
| MGA Commercial Products [Member] | Loss Adjustment Expenses Recognized In 2013 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
|
|
16,000
|
| Hallmark Select Business Unit [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
|
(1,000)
|
|
| Hallmark Select Business Unit [Member] | Loss Adjustment Expenses Recognized In 2011 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
2,300
|
| Commerical Excess Liability [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
900
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
300
|
|
|
| Medical Professional Liability Products [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
400
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
800
|
|
|
| General Aviation [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
300
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
900
|
|
|
| Personal Lines Business Unit [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
|
$ (2,900)
|
|
| Personal Lines Business Unit [Member] | Loss Adjustment Expenses Recognized In 2013 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Claims and Claim Adjustment Expenses Incurred Related to Prior Years |
|
|
1,800
|
| Personal Lines Business Unit [Member] | Loss Adjustment Expenses Recognized In 2014 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
$ 2,600
|
|
|
| Excess and Umbrella Business Unit [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Favorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
400
|
| Aircraft Hull [Member] | Loss Adjustment Expenses Recognized In 2012 [Member] |
|
|
|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |
|
|
|
| Unfavorable adjustment to prior years liability for unpaid claims and claims adjustment expense |
|
|
$ 100
|