16. Loss per Share

The following table illustrates the computation of basic and diluted loss per common share:


	Three Months Ended
	June 30, 2016			June 30, 2015
Net loss	$	(17,816	)	$	(30,626	)
Weighted average common stock outstanding
Basic		34,716,081			34,092,402
Diluted		34,716,081			34,092,402
Loss per share
Basic	$	(0.51	)	$	(0.90	)
Diluted	$	(0.51	)	$	(0.90	)


	Six Months Ended
	June 30, 2016			June 30, 2015
Net loss	$	(9,691	)	$	(50,655	)
Weighted average common stock outstanding
Basic		34,707,492			34,074,534
Diluted		34,707,492			34,074,534
Loss per share
Basic	$	(0.28	)	$	(1.49	)
Diluted	$	(0.28	)	$	(1.49	)

The following outstanding instruments were excluded from the computation of diluted loss per share, as they have an anti-dilutive effect on the calculation:


	Three Months Ended				Six Months Ended
	June 30, 2016		June 30, 2015		June 30, 2016		June 30, 2015
Options		3,752,331		3,341,700		3,752,331		3,341,700
Restricted Stock Units		515,795		129,962		515,795		129,962

Rights Plan

On March 5, 2015, the Company entered into a Rights Agreement, dated as of March 5, 2015 between the Company and American Stock Transfer & Trust Company, LLC, as rights agent (the “Rights Agreement”), and the Board of Directors of the Company authorized and declared a dividend of one preferred stock purchase right (a “Right” and collectively, the “Rights”) for each share of the Company’s common stock, par value $0.01 per share, outstanding at the close of business on March 16, 2015. On March 2, 2016, the Company entered into an amendment to the Rights Agreement. As amended, each Right, once exercisable, will entitle the registered holder to purchase from the Company one one-thousandth of a share of Series A Junior Participating Preferred Stock, par value $0.01 per share, at a purchase price of $12, subject to adjustment (the “Purchase Price”). The Rights are not presently exercisable and remain attached to the shares of common stock unless and until the occurrence of the earlier of the following (the “Distribution Date”): (i) the tenth day after the public announcement or disclosure by the Company or any person or group of affiliated or associated persons that any person or group of affiliated or associated persons has become an “Acquiring Person” by obtaining beneficial ownership of 12.5% (or 20% in the case of a “passive institutional investor,” which is defined generally as any person who has reported beneficial ownership of shares of common stock on Schedule 13G under the Securities Exchange Act of 1934) or more of the Company’s outstanding common stock, subject to certain exceptions; or (ii) the tenth business day (or such later date as the Company’s Board of Directors may designate before a person or group of affiliated or associated persons becomes an Acquiring Person) after the commencement of, or first public announcement of the intent of any person to commence, a tender or exchange offer by any person or group of affiliated or associated persons, which would, if consummated, result in such person or group becoming an Acquiring Person. The Board of Directors may redeem all of the Rights for $0.001 per Right at any time before any person or group of affiliated or associated persons becomes an Acquiring Person. In addition, at any time on or after any person or group of affiliated or associated persons becomes an Acquiring Person (but before any person or group of affiliated or associated persons becomes the owner of 50% or more of the Company’s outstanding common stock), the Board of Directors may exchange all or part of the Rights (other than the Rights beneficially owned by the Acquiring Person and certain affiliated persons) for shares of common stock at an exchange ratio of one share of common stock per Right. The Rights will expire at the close of business on September 5, 2016, unless redeemed or exchanged prior to that time.

If any person or group of affiliated or associated persons becomes an Acquiring Person, then, after the Distribution Date, each Right (other than Rights beneficially owned by the Acquiring Person and certain affiliated persons or transferees thereof) will entitle the holder to purchase, for the Purchase Price, a number of shares of common stock having a market value of twice the Purchase Price. Alternatively, if, after any person or group of affiliated or associated persons becomes an Acquiring Person, (1) the Company is involved in a merger or other business combination in which the Company is not the surviving corporation or its common stock is changed into or exchanged for other securities or assets; or (2) the Company or one or more of its subsidiaries sell or otherwise transfer assets or earning power aggregating more than 50% of the assets or earning power of the Company and its subsidiaries, taken as a whole, then each Right will entitle the holder to purchase, for the Purchase Price, a number of shares of common stock of the other party to such business combination or sale (or in certain circumstances, an affiliate) having a market value of twice the Purchase Price.