Share-Based Compensation

3 Months Ended

Mar. 31, 2014

Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]

Share-Based Compensation

Share-Based Compensation

Share-based compensation expense for all share-based payment awards granted or modified is based on the estimated grant-date fair value. The Company recognizes these compensation costs on a straight-line basis over the requisite service period of the award, which is the option vesting term of four or five years for options granted prior to 2008 and four years for options granted subsequent to January 1, 2008, for only those shares expected to vest. The fair value of stock option awards is estimated using the Black-Scholes option pricing model with the grant-date assumptions and weighted-average fair values.

Under the Company’s 2005 Incentive Award Plan (the “Plan”), the Compensation Committee of the Company’s Board of Directors granted performance vesting restricted stock units to the Company’s senior management and key employees as follows:

	Grant Year
	2014	2013	2012
Three-year performance period ending December 31,	2016	2015	2014
Vesting shares, target	91,500	84,500	89,000
Vesting shares, maximum	171,563	190,125	200,250

The restricted stock units vest at the end of a three-year performance period beginning with the year of the grant, and then only if, and to the extent that, the Company’s performance during the performance period achieves the threshold established by the Compensation Committee of the Company’s Board of Directors. For 2012 grants, vesting will be based on the Company’s cumulative underwriting income and net premium written growth. For 2013 and 2014 grants, vesting will be based on the Company’s cumulative underwriting income, annual underwriting income, and net earned premium growth.

The fair value of each restricted share grant was determined based on the market price on the grant date. Compensation cost is recognized based on management’s best estimate that performance goals will be achieved. If such goals are not met, no compensation cost is recognized and any recognized compensation cost would be reversed. For 2012 grants, the achievement of the performance condition set by the Compensation Committee was no longer considered probable, and previously recognized compensation costs were reversed.