Stock-Based Compensation Plans

6 Months Ended

Jun. 30, 2013

Stock-Based Compensation Plans

Stock-Based Compensation Plans

7.  Stock-Based Compensation Plans

Our 2007 Stock Incentive Plan (the 2007 Plan) was adopted on May 24, 2007. Under this 2007 Plan, a total of 2,000,000 shares are authorized for stock based compensation in the form of either restricted stock or stock options. There have been 1,810,056 shares of restricted stock awarded to date. The fair value of the restricted stock awards equaled the stock price at the date of grants. The following table summarizes restricted stock activity during the years ended December 31, 2011, December 31, 2012 and the six months ended June 30, 2013:

	Shares
Restricted stock at December 31, 2010	575,791
Granted in 2011 (vesting over 4 years)	324,924
Granted in 2011 (vesting on first anniversary from date of issuance)	22,100
Cancelled in 2011	(27,477	)
Vested in 2011	(244,044	)
Restricted stock at December 31, 2011	651,294
Granted in 2012 (vesting over 4 years)	283,000
Granted in 2012 (vesting on first anniversary from date of issuance)	28,040
Cancelled in 2012	(8,988	)
Vested in 2012	(270,692	)
Restricted stock at December 31, 2012	682,654
Granted in 2013 (vesting over 4 years)	130,000
Granted in 2013 (vesting on first anniversary from date of issuance)	21,408
Cancelled in 2013	—
Vested in 2013	(131,491	)
Restricted Stock at June 30, 2013	702,571

All cancelled shares have reverted to the share reserve and are available for issuance at a later date, in accordance with the 2007 Plan.

Our accounting policy is to recognize the associated expense of such awards on a straight-line basis over the vesting period. Approximately $1.7 million and $1.6 million in stock compensation expense were recorded in the six months ended June 30, 2013 and June 30, 2012, respectively. The stock compensation expense related to the restricted stock awards will be recognized over the average remaining vesting period of 2.5 years and totals $6.9 million at June 30, 2013 compared to 2.6 years and totaling $7.3 million at June 30, 2012. At June 30, 2013, the intrinsic value of unvested restricted stock awards issued through June 30, 2013 is $9.5 million. At June 30, 2012, the intrinsic value of unvested restricted stock awards issued through June 30, 2012 was $8.6 million. The 2007 Plan terminates on May 24, 2017.

In the six months ended June 30, 2013, 44,225 options under the 1996 Stock Options/Stock Issuance Plan (the 1996 Plan) were exercised and 6,500 options were canceled. As of June 30, 2013, there are 86,203 stock options remaining under the 1996 Plan which have an intrinsic value of $0.3 million. In the six months ended June 30, 2012, 230,814 options under the 1996 Plan were exercised. As of June 30, 2012, there were 212,767 stock options remaining under the 1996 Plan having an intrinsic value of $0.9 million.