(12) Stock-Based Compensation Plans

The components of stock compensation expense for the years ended December 31, 2012, 2011 and 2010, included in the accompanying consolidated statements of income were as follows:

	2012		2011		2010
	(in thousands)
2007 Stock Incentive Plan	$	3,092	$	3,108	$	2,603
1996 Stock Option/Stock Issuance Plan	—		—		14
Employee Stock Purchase Plan	52		65		61
Total Stock Compensation Expense	$	3,144	$	3,173	$	2,678

The significant stock compensation plans are described below.

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 1,728,156 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:

	Shares
Restricted stock at December 31, 2009	558,304
Granted in 2010 (vesting over 4 years)	190,375
Granted in 2010 (vesting on first anniversary from date of issuance)	21,635
Cancelled in 2010	—
Vested in 2010	(194,523	)
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

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

Our accounting policy is to recognize the associated expense of such awards on a straight-line basis over the vesting period. At December 31, 2012 the stock compensation expense related to the restricted stock awards that will be recognized over the average remaining vesting period of 2.5 years totals $6.6 million. At December 31, 2012, the intrinsic value of unvested restricted stock awards is $9.8 million. The Plan terminates on May 24, 2017.

A summary of activity under the 2007 Plan for the years ended December 31, 2012, 2011 and 2010 is as follows:

	Number Outstanding		Weighted Average Grant Date Fair Value		Aggregate Value
Balance as of January 1, 2010	558,304		$	11.14	$	6,217,214
Shares granted	212,010		11.19		2,371,619
Shares cancelled	—		—		—
Shares vested	(194,523	)	11.89		(2,312,649		)
Balance as of December 31, 2010	575,791		$	10.90	$	6,276,184
Shares granted	347,024		12.45		4,318,920
Shares cancelled	(27,477	)	11.34		(311,596		)
Shares vested	(244,044	)	11.14		(2,719,232		)
Balance as of December 31, 2011	651,294		$	11.61	$	7,564,276
Shares granted	311,040		8.55		2,659,170
Shares cancelled	(8,988	)	12.52		(112,521		)
Shares vested	(270,692	)	11.33		(3,067,357		)
Balance as of December 31, 2012	682,654		$	11.61	$	7,043,568

Employee Stock Purchase Plan: Under our Employee Stock Purchase Plan (ESPP), as amended and restated effective May 20, 2010, 250,000 shares of common stock have been reserved for issuance. The Purchase Plan was effective in September 1996. Eligible employees may designate not more than 10% of their cash compensation to be deducted each pay period for the purchase of common stock under the Purchase Plan. Participants may purchase not more than 1,000 shares or $25,000 of common stock in any one calendar year. Each January 31 and July 31 shares of common stock are purchased with the employees’ payroll deductions from the immediately preceding six months at a price per share of 85% of the lesser of the market price of the common stock on the purchase date or the market price of the common stock on the date of entry into an offering period. In 2012 and 2011, 18,482 and 19,983 shares of common stock, respectively, were issued under the Purchase Plan. We issue new shares through our transfer agent upon employee stock purchase. The weighted average per share fair value of the employee’s purchase rights under the Purchase Plan for the rights granted was $3.19, $3.40 and $3.40 for 2012, 2011 and 2010, respectively.

1996 Stock Option/Stock Issuance Plan: We granted stock options under our 1996 Stock Option/Stock Issuance Plan (the 1996 Plan), as amended and restated as of March 1, 2003, until the plan terminated in June 2006. Under this Plan, a total of 3,025,000 shares were authorized for grant. These options have a contractual term of ten years and vest at a rate of 25% annually commencing on the first anniversary of the date of grant. For shares outstanding with graded vesting, our accounting policy is to value the options as one award and recognize the associated expense on a straight-line basis over the vesting period. We issue new shares through our transfer agent upon stock option exercise. In the year ended December 31, 2011, 369,310 options were exercised with a total intrinsic value at exercise date of approximately $2.1 million and no options were cancelled. In the year ended December 31, 2012, 306,653 options were exercised with a total intrinsic value at exercise date of approximately $2.4 million and no options were cancelled. There are 136,928 stock options vested and expected to vest under the 1996 Stock Option/Stock Issuance Plan which have an intrinsic value of $0.7 million.

A summary of the activity under the 1996 Plan for the years ended December 31, 2012, 2011 and 2010 is as follows:

	Options Available for Grant	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding as of January 1, 2010	—	1,019,788		$	6.68	2.53	$	8,486,579
Options exercised	—	(206,146	)	6.20
Options cancelled	—	(751	)	6.50
Outstanding as of December 31, 2010	—	812,891		$	6.80	1.81	$	5,064,940
Options exercised	—	(369,310	)	7.34
Options cancelled	—	—		—
Outstanding as of December 31, 2011	—	443,581		$	6.35	1.82	$	2,484,009
Options exercised	—	(306,653	)	5.34
Options cancelled	—	—		—
Outstanding as of December 31, 2012	—	136,928		$	8.60	2.23	$	781,692

Vested and expected to vest at: December 31, 2012		136,928		$	8.60	2.23	$	781,692

Options exercisable at:
December 31, 2010		812,891		$	6.80	1.81	$	5,064,940
December 31, 2011		443,581		$	6.35	1.82	$	2,484,009
December 31, 2012		136,928		$	8.60	2.23	$	781,692

The following table summarizes information concerning outstanding and exercisable options at December 31, 2012:

	Options Outstanding				Options Exercisable
Exercise Prices	Number Outstanding	Weighted Average Remaining Contractual Life (in years)	Weighted Average Exercise Price		Number Exercisable	Weighted Average Exercise Price
From $4.92 to $4.92	3,850	0.41	4.92		3,850	4.92
From $5.01 to $5.01	18,875	0.17	5.01		18,875	5.01
From $8.40 to $8.40	3,921	2.38	8.40		3,921	8.40
From $8.49 to $8.49	3,890	1.40	8.49		3,890	8.49
From $8.70 to $8.70	4,281	3.40	8.70		4,281	8.70
From $9.20 to $9.20	91,516	2.59	9.20		91,516	9.20
From $11.24 to $11.24	10,595	3.25	11.24		10,595	11.24
From $4.50 to $11.24	136,928	2.23	$	8.60	136,928	$	8.60