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Employee Share-Based Incentive Compensation Plans | 12 Months Ended
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Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Employee Share-Based Incentive Compensation Plans | Employee Share-Based Incentive Compensation Plans White Mountains’s share-based incentive compensation plans are designed to incentivize key employees and service providers to maximize shareholder value over long periods of time. White Mountains believes that this is best pursued by utilizing a pay-for-performance program that closely aligns the financial interests of management with those of its shareholders. White Mountains accomplishes this by emphasizing highly variable long-term compensation that is contingent on performance over a number of years rather than entitlements. White Mountains expenses all its share-based compensation. As a result, White Mountains’s calculation of its owners’ returns includes the expense of all outstanding share-based compensation awards. Incentive Compensation Plans White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees and service providers of White Mountains. The WTM Incentive Plan was adopted by the Board, was approved by the Company’s sole shareholder in 1985 and was subsequently amended by its shareholders in 1995, 2001, 2003, 2005, 2010 and 2013. Share-based incentive awards that may be granted under the plan include performance shares, restricted shares, performance units, incentive stock options and non-qualified stock options (“Non-Qualified Options”). Performance shares are conditional grants of a specified maximum number of common shares or an equivalent amount of cash. Awards generally vest at the end of a three-year period, are subject to the attainment of pre-specified performance goals, and are valued based on the market value of common shares at the time awards are paid. Performance shares earned under the WTM Incentive Plan are typically paid in cash but may be paid in common shares or by deferral into certain non-qualified compensation plans of White Mountains. Compensation expense is recognized on a pro rata basis over the vesting period of the awards. The OneBeacon Long-Term Incentive Plan (the “OneBeacon Incentive Plan”) provides for grants to key employees of OneBeacon various types of share-based incentive awards, including performance shares, restricted shares, restricted stock units and Non-Qualified Options. The Sirius Group Performance Plan provides for granting phantom White Mountains performance shares (the “WTM Phantom Share Plan”) to certain key employees of Sirius Group. Beginning with the 2011-2013 performance cycle, employees of Sirius Group were granted performance shares from the WTM Incentive Plan. The performance goals for full payment of performance shares issued under these plans are identical to those of the WTM Incentive Plan. Performance shares earned under the WTM Phantom Share Plan are typically paid in cash but could be paid in common shares or by deferral into certain non-qualified compensation plans of White Mountains. Compensation expense is recognized on a pro rata basis over the vesting period of the awards. White Mountains offers certain types of share-based compensation under qualified retirement plans. The defined contribution plans of OneBeacon and Sirius Group (the “401(k) Plans”) offer its U.S.-domiciled participants the ability to invest their balances in several different investment options, including the Company’s or OneBeacon’s common shares. OneBeacon’s KSOP is an employer-funded benefit plan that provides all of its participants with an annual base contribution in common shares equal to 3% of their salary, up to the applicable Social Security wage base ($117,000 for 2014). Additionally, those participants not otherwise eligible to receive certain other OneBeacon benefits can earn a variable contribution of up to 6% of their salary, subject to the applicable IRS annual covered compensation limits ($260,000 for 2014) and contingent upon OneBeacon’s performance. Performance Shares Performance shares are designed to reward company-wide performance. The level of payout ranges from zero to two times the number of shares initially granted, depending on White Mountains’s financial performance. Performance shares become payable at the conclusion of a performance cycle (typically three years) if pre-defined financial targets are met. The principal performance measure used for determining performance share payouts is after-tax growth in White Mountains’s intrinsic business value per share. The Compensation Committee historically has considered the growth in intrinsic business value per share to be based equally on the growth of economic value per share and growth in adjusted book value per share, both inclusive of dividends. Economic value is calculated by adjusting the GAAP book value per share for differences between the GAAP carrying values of certain assets and liabilities and White Mountains’s estimate of their underlying economic values (for example, the time value discount in loss reserves). The following summarizes performance share activity for the years ended December 31, 2014, 2013 and 2012 for performance shares granted under the WTM Incentive Plan and the WTM Phantom Share Plan:
|  | Year Ended December 31,
|  | 2014 |  | 2013 |  | 2012
Millions, except share amounts |  | Target Performance Shares Outstanding |  | Accrued Expense |  | Target Performance Shares Outstanding |  | Accrued Expense |  | Target Performance Shares Outstanding |  | Accrued Expense
Beginning of period |  | 119,220 |  |  | $ | 60.2 |  |  | 119,357 |  |  | $ | 29.4 |  |  | 150,064 |  |  | $ | 66.1 |
Shares paid or expired(1) |  | (37,130 | ) |  | (26.7 | ) |  | (47,310 | ) |  | (11.0 | ) |  | (68,357 | ) |  | (58.3 | )
New grants |  | 45,660 |  |  | — |  |  | 47,170 |  |  | — |  |  | 38,432 |  |  | — |
Assumed forfeitures and cancellations(2)(3) |  | (4,201 | ) |  | (.7 | ) |  | 3 |  |  | (.6 | ) |  | (782 | ) |  | .6 |
Expense recognized |  | — |  |  | 15.3 |  |  | — |  |  | 42.4 |  |  | — |  |  | 21.0 |
Ending December 31, |  | 123,549 |  |  | $ | 48.1 |  |  | 119,220 |  |  | $ | 60.2 |  |  | 119,357 |  |  | $ | 29.4 |
(1) | WTM performance shares payments in 2014 for the 2011-2013 performance cycle ranged from 88% to 131.5% of target. WTM performance shares payments in 2013 for the 2010-2012 performance cycle ranged from 33% to 98% of target. WTM performance share payments in 2012 for the 2009-2011 performance cycle ranged from 147% to 155% of target. As of December 31, 2012, White Mountains paid $9.9 as a partial payment for the 2010-2012 performance cycle.
(2) | On November 19, 2014, the Compensation Committee canceled 3,040 WTM performance shares for the 2014-2016 performance cycle and issued the same number of WTM restricted shares.
(3) | Amounts include changes in assumed forfeitures, as required under GAAP.
For the 2011-2013 performance cycle, the Company issued common shares for 3,570 performance shares earned and all other performance shares earned were settled in cash. For the 2009-2011 performance cycle, the Company issued common shares for 9,577 performance shares earned and all other performance shares earned were settled in cash. If the outstanding WTM performance shares had vested on December 31, 2014, the total additional compensation cost to be recognized would have been $16.9 million, based on accrual factors as of December 31, 2014 (common share price and payout assumptions). Performance shares granted under the WTM Incentive Plan The following table summarizes performance shares outstanding and accrued expense for performance shares awarded under the WTM Incentive Plan as of December 31, 2014 for each performance cycle:
Millions, except share amounts |  | Target WTM Performance Shares Outstanding |  | Accrued Expense
Performance cycle: |  |  |  |  |  |
2014 – 2016 |  | 41,937 |  |  | $ | 4.1 |
2013 – 2015 |  | 46,803 |  |  | 18.9 |
2012 – 2014 |  | 37,977 |  |  | 26.4 |
Sub-total |  | 126,717 |  |  | 49.4 |
Assumed forfeitures |  | (3,168 | ) |  | (1.3 | )
Total at December 31, 2014 |  | 123,549 |  |  | $ | 48.1 |
The targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan to non-investment personnel for the 2014-2016 performance cycles is an 9% growth in intrinsic business value per share. Growth of 3% or less would result in no payout and growth of 15% or more would result in a payout of 200%. The targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan to non-investment personnel for the 2013-2015 performance cycles is an 8% growth in intrinsic business value per share. Growth of 2% or less would result in no payout and growth of 14% or more would result in a payout of 200%. The targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan to non-investment personnel for the 2012-2014 performance cycles is a 8% growth in intrinsic business value per share. Growth of 2% or less would result in no payout and growth of 14% or more would result in a payout of 200%. For investment personnel, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is based one-third on growth in intrinsic business value per share (as described above), one-third on achieving a total return on invested assets as measured against metrics based on U.S. Treasury Note returns and one-third on achieving a total return on invested assets as measured against metrics based on the Barclays U.S. Intermediate Aggregate Index returns. For Prospector Partners, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is based equally on growth in intrinsic business value per share (as described above) and achieving a total return on invested assets as measured against metrics based on U.S. Treasury Note returns. Restricted Shares The following outlines the unrecognized compensation cost associated with the outstanding restricted share awards under the WTM Incentive Plan for the years ended December 31, 2014, 2013 and 2012:
|  | Year Ended December 31,
|  | 2014 |  | 2013 |  | 2012
Millions, except share amounts |  | Restricted Shares | Unamortized Issue Date Fair Value |  | Restricted Shares | Unamortized Issue Date Fair Value |  | Restricted Shares | Unamortized Issue Date Fair Value
Non-vested, |  |  |  |  |  |  |  |  |
Beginning of period |  | 94,130 |  | $ | 17.0 |  |  | 69,910 |  | $ | 16.8 |  |  | 72,000 |  | $ | 13.3 |
Issued (1) |  | 23,440 |  | 13.1 |  |  | 25,720 |  | 14.4 |  |  | 32,160 |  | 15.7 |
Vested (2) |  | (33,205 | ) | — |  |  | (1,500 | ) | — |  |  | (32,945 | ) | — |
Forfeited |  | (1,051 | ) | (.5 | ) |  | — |  | — |  |  | (1,305 | ) | (.2 | )
Expense recognized |  | — |  | (15.3 | ) |  | — |  | (14.2 | ) |  | — |  | (12.0 | )
Non-vested at December 31, |  | 83,314 |  | $ | 14.3 |  |  | 94,130 |  | $ | 17.0 |  |  | 69,910 |  | $ | 16.8 |
(1) | During 2012, the Compensation Committee accelerated the vesting date for an installment of 5,000 restricted shares from January 20, 2013 to December 31, 2012.
(2) | On November 19, 2014, the Compensation Committee canceled 3,040 WTM performance shares for the 2014-2016 performance cycle and issued the same number of WTM restricted shares.
During 2014, White Mountains issued 23,440 restricted shares that vest on January 1, 2017. During 2013, White Mountains issued 25,720 restricted shares that vest on January 1, 2016. During 2012, White Mountains issued 27,960 restricted shares that vest on January 1, 2015, 3,000 restricted shares that vest in two equal annual installments that began on February 22, 2014 and 1,200 restricted shares that vest on July 16, 2015. The unrecognized compensation cost as of December 31, 2014 is expected to be recognized ratably over the remaining vesting periods. Stock Options Non-Qualified Options The Company’s Chairman and CEO holds 125,000 Non-Qualified Options, which are exercisable at $742 per common share and expire on January 20, 2017. The Non-Qualified Options have been fully amortized. Share-Based Compensation Based on OneBeacon Ltd. Common Shares OneBeacon Performance Shares The following summarizes activity for the years ended December 31, 2014, 2013 and 2012 for OneBeacon performance shares granted under the OneBeacon Incentive Plan:
|  | Year Ended December 31,
|  | 2014 |  | 2013 |  | 2012
Millions, except share amounts |  | Target Performance Shares Outstanding |  | Accrued Expense |  | Target Performance Shares Outstanding |  | Accrued Expense |  | Target Performance Shares Outstanding |  | Accrued Expense
Beginning of period |  | 493,421 |  |  | $ | 4.0 |  |  | 563,190 |  |  | $ | 1.2 |  |  | 642,667 |  |  | $ | 9.7 |
Payments and deferrals(1) |  | (142,138 | ) |  | (1.0 | ) |  | (238,658 | ) |  | — |  |  | (258,901 | ) |  | (7.7 | )
New awards |  | 165,800 |  |  | — |  |  | 179,000 |  |  | — |  |  | 181,290 |  |  | — |
Forfeitures and cancellations(2) |  | 387 |  |  | — |  |  | (10,111 | ) |  | (.1 | ) |  | (1,866 | ) |  | — |
Expense recognized |  | — |  |  | .4 |  |  | — |  |  | 2.9 |  |  | — |  |  | (.8 | )
End of period |  | 517,470 |  |  | $ | 3.4 |  |  | 493,421 |  |  | $ | 4.0 |  |  | 563,190 |  |  | $ | 1.2 |
(1) | OneBeacon performance share payments in 2014 for the 2011-2013 performance cycle were at 37.1% of target. No payments were made in 2013 for the 2010-2012 OneBeacon performance cycle as the performance factor was zero. OneBeacon performance share payments in 2012 for the 2009-2011 performance cycle were at 138.6% of target.
(2) | Amounts include changes in assumed forfeitures, as required under GAAP.
The following summarizes OneBeacon performance shares outstanding awarded under the OneBeacon Incentive Plan as of December 31, 2014 for each performance cycle:
Millions, except share amounts |  | Target OneBeacon Performance Shares Outstanding |  | Accrued Expense
Performance cycle: |  |  |  |  |  |
2014 – 2016 |  | 165,800 |  |  | $ | .5 |
2013 – 2015 |  | 179,000 |  |  | 1.4 |
2012 – 2014 |  | 181,290 |  |  | 1.5 |
Sub-total |  | 526,090 |  |  | 3.4 |
Assumed forfeitures |  | (8,620 | ) |  | — |
Total at December 31, 2014 |  | 517,470 |  |  | $ | 3.4 |
If the outstanding OneBeacon performance shares had been vested on December 31, 2014, the total additional compensation cost to be recognized would have been $1.6 million, based on December 31, 2014 accrual factors (common share price and payout assumptions). The targeted performance goal for full payment of the outstanding OneBeacon performance shares granted during 2014 is growth in book value per share of 14%. At a growth in book value per share of 7% or less, no performance shares would be earned and at a growth in book value per share of 21% or more, 200% of performance shares would be earned. The targeted performance goal for full payment of the outstanding OneBeacon performance shares granted during 2013 is growth in book value per share of 13%. At a growth in book value per share of 6% or less, no performance shares would be earned and at a growth in book value per share of 20% or more, 200% of performance shares would be earned. The targeted performance goal for full payment of the outstanding OneBeacon performance shares granted during 2012 is growth in book value per share of 10%. At a growth in book value per share of 3% or less, no performance shares would be earned and at a growth in book value per share of 17% or more, 200% of performance shares would be earned. OneBeacon Restricted Shares The following table summarizes the unrecognized compensation cost associated with the outstanding OneBeacon restricted stock awards for the years ended December 31, 2014, 2013 and 2012.
|  | Year Ended December 31,
|  | 2014 |  | 2013 |  | 2012
Millions, except share amounts |  | Restricted Shares |  | Unamortized Issue Date Fair Value |  | Restricted Shares |  | Unamortized Issue Date Fair Value |  | Restricted Shares |  | Unamortized Issue Date Fair Value
Non-vested, |  |  |  |  |  |  |  |  |  |  |  |
Beginning of period |  | 915,000 |  |  | $ | 6.5 |  |  | 927,000 |  |  | $ | 9.6 |  |  | 630,000 |  |  | $ | 7.7 |
Issued |  | — |  |  | — |  |  | — |  |  | — |  |  | 300,000 |  |  | 4.5 |
Vested |  | (300,000 | ) |  | — |  |  | (9,000 | ) |  | — |  |  | (667 | ) |  | — |
Forfeited |  | (2,500 | ) |  | — |  |  | (3,000 | ) |  | — |  |  | (2,333 | ) |  | — |
Expense recognized |  | — |  |  | (3.0 | ) |  | — |  |  | (3.1 | ) |  | — |  |  | (2.6 | )
End of period |  | 612,500 |  |  | $ | 3.5 |  |  | 915,000 |  |  | $ | 6.5 |  |  | 927,000 |  |  | $ | 9.6 |
On March 1, 2012, OneBeacon issued 300,000 restricted shares to key employees that vest in two equal installments on February 28, 2014 and 2015. On May 25, 2011, OneBeacon issued 630,000 restricted shares to its CEO that vest in four equal annual installments beginning on February 22, 2014, 2015, 2016 and 2017. Concurrently with the grant of the restricted shares, 35,000 OneBeacon performance shares issued to OneBeacon’s CEO for the 2011-2013 performance share cycle were forfeited and performance share awards to OneBeacon’s CEO for the subsequent 5 years have been or will also be reduced by 35,000 shares. The restricted shares contain dividend participation features, and therefore, are considered participating securities. The unrecognized compensation cost associated with outstanding restricted share awards as of December 31, 2014 is expected to be recognized ratably over the remaining vesting periods. Share-based Compensation Under Qualified Retirement Plans Contributions to the KSOP with respect to the years ended 2014, 2013 and 2012 were made with either the Company’s or OneBeacon Ltd.’s common shares, dependent on the employer. The variable contribution amounts for eligible participants of the KSOP constituted approximately 2%, 4% and 3% of salary for the years ended 2014, 2013 and 2012. White Mountains recorded $4.4 million, $6.3 million and $4.8 million in compensation expense to pay benefits and allocate common shares to participant’s accounts for the years ended 2014, 2013 and 2012. As of December 31, 2014 and 2013, the plans owned 3% or less of either of the Company’s or OneBeacon Ltd.’s total common shares outstanding. All White Mountains common shares held by the KSOP are considered outstanding for earnings (loss) per share computations.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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