Stock-Based Compensation Plans

Plan Administration

The Company's Amended and Restated 2009 Equity Compensation Plan (“Equity Plan”) provides for the grant of nonqualified and incentive stock options, stock awards and stock units to officers and employees of the Company. The Equity Plan also provides for the grant of option rights and restricted stock to non-employee directors. As of December 31, 2015, the Company had approximately 579,000 shares of common stock still available under the Equity Plan with no participant allowed a grant of more than 40,000 shares of common stock in any calendar year. The Equity Plan is administered by the Compensation Committee of the Board of Directors, or its designee, which as administrator of the plan, has the authority to select plan participants, grant awards, and determine the terms and conditions of the awards.

The Company also has a Stock Performance Rights Plan (“SPR Plan”) that provides for the issuance of Stock Performance Rights (“SPRs”) that allow non-employee directors, officers and key employees to receive cash awards, subject to certain restrictions, equal to the appreciation of the Company's common stock. The SPR Plan is administered by the Compensation Committee of the Board of Directors.

Stock Performance Rights

SPRs entitle the recipient to receive a cash payment equal to the excess of the market value of the Company's common stock over the SPR exercise price when the SPRs are surrendered. Expense, equal to the fair market value of the SPR at the date of grant and remeasured each reporting period, is recorded ratably over the vesting period. Compensation expense or benefit is included in General and administrative expense. A majority of the outstanding SPRs have a seven to ten year life and vest over one to three years beginning on the first anniversary of the date of the grant.

On December 31, 2015, the SPRs outstanding were re-measured at fair value using the Black-Scholes valuation model. This model requires the input of subjective assumptions that may have a significant impact on the fair value estimate. The weighted-average estimated value of SPRs outstanding as of December 31, 2015 was $9.82 per SPR using the following assumptions:



Expected volatility	33.9% to 57.2%
Risk-free rate of return	0.2% to 1.7%
Expected term (in years)	0.2 to 4.5
Expected annual dividend	$0

The expected volatility was based on the historic volatility of the Company's stock price commensurate with the expected life of the SPR. The risk-free rate of return reflects the interest rate offered for zero coupon treasury bonds over the expected life of the SPR. The expected life represents the period of time that options granted are expected to be outstanding and was calculated using the simplified method allowed by the SEC due to insufficient historical data. The estimated annual dividend was based on the recent dividend payout trend.

Compensation expense of $0.9 million, $5.5 million and $1.4 million was recorded for the years ended December 31, 2015, 2014 and 2013, respectively. Cash in the amount of $1.0 million was paid out for SPR exercises in 2015 and an immaterial amount of cash was paid out in 2014 and 2013.

Activity related to the Company’s SPRs during the year ended December 31, 2015 was as follows:



	Number of SPRs		Weighted Average Exercise Price
Outstanding on December 31, 2014	644,691		$	14.50
Granted	409,373		28.17
Exercised	(64,300	)	11.88
Cancelled	(30,265	)	33.34
Outstanding on December 31, 2015	959,499		19.91

Exercisable on December 31, 2015	462,725		$	14.04

The SPRs outstanding had an intrinsic value of $6.3 million as of December 31, 2015. Unrecognized compensation cost related to non-vested SPRs was $2.0 million at December 31, 2015, which will be recognized over a weighted average period of 1.8 years. During the year ended December 31, 2015, 204,325 SPRs with a fair value of $1.9 million vested. At December 31, 2015, the weighted average remaining contractual term was 5.4 years for all outstanding SPRs and 4.6 years for all exercisable SPRs.

Restricted Stock Awards

Restricted stock awards ("RSAs") generally vest over a one to three year period beginning on the first anniversary of the date of the grant. Upon vesting, the vested restricted stock awards are exchanged for an equal number of the Company’s common stock. The participants have no voting or dividend rights with the restricted stock awards. The restricted stock awards are valued at the closing price of the common stock on the date of grant and the expense is recorded ratably over the vesting period.

Compensation expense of $0.6 million, $0.5 million and $0.6 million related to the RSAs was recorded in General and administrative expenses for 2015, 2014 and 2013, respectively. Activity related to the Company’s RSAs during the year ended December 31, 2015 was as follows:



	Restricted Stock Awards
Outstanding on December 31, 2014	38,123
Granted	22,820
Exchanged for shares	(29,958	)
Outstanding on December 31, 2015	30,985

As of December 31, 2015, there was $0.3 million of total unrecognized compensation cost related to RSAs that will be recognized over a weighted average period of seven months. The awards granted in 2015 had a weighted average grant date fair value of $23.01 per share.

Market Stock Units

Market Stock Units ("MSUs") are exchangeable for between 0% to 150% of the Company's common shares at the end of the vesting period based on the trailing 30 or 60 day average closing price of the Company's common stock. The value of the MSUs was determined using a geometric brownian motion model that, based on certain variables, generates a large number of random trials simulating the price of the common stock over the measurement period. Expense of $0.5 million, $0.3 million and $0.2 million related to MSUs was recorded in the years ended December 31, 2015, 2014 and 2013, respectively. Activity related to the Company’s MSUs during the year ended December 31, 2015 was as follows:



	Number of Market Stock Units		Maximum Shares Potentially Issuable
Outstanding on December 31, 2014	88,600		132,900
Granted	30,633		45,949
Exchanged for shares	(24,493	)	(36,739	)
Cancelled	(6,970	)	(10,455	)
Outstanding on December 31, 2015	87,770		131,655

Stock Options

Each stock option can be exchanged for one share of the Company’s common stock. The stock options granted in 2015 vest ratably over thee years, have a seven year term and had a weighted average fair value of $8.57 on December 31, 2015. Expense related to stock options was $0.1 million in 2015 and unrecognized compensation at December 31, 2015 was $0.2 million.

Activity related to the Company’s stock options during the year ended December 31, 2015 was as follows:

Stock Awards

As of December 31, 2015, the Company had 78,000 stock awards outstanding which entitle the holder to receive shares of the Company’s common stock equal in value to the appreciation in the Company’s common stock from the exercise price of $10.00 up to the date the holder exercises the award. The stock awards vested on December 31, 2014 and expire on October 2, 2017. During 2015, 17,000 stock awards were exercised resulting in the issuance of 12,714 common shares.

Number of Stock Options

Weighted Average Exercise Price

Outstanding on December 31, 2014

Outstanding on December 31, 2015