Net Income (Loss) Per Common Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share

NOTE 4. NET INCOME (LOSS) PER COMMON SHARE

The computation of basic net income (loss) per common share is based on the weighted-average number of common shares outstanding during each period. The computation of diluted net income (loss) per common share is based on the weighted-average number of common shares outstanding during the period plus, when their effect is dilutive, incremental shares consisting of shares subject to stock options, restricted stock units, performance share awards, stock appreciation rights, warrants, ESPP shares and shares issuable upon conversion of convertible debt.

In periods where the Company reported a net loss, all common stock equivalents are deemed anti-dilutive such that basic net loss per common share and diluted net loss per common share are equal. The Convertible Notes can be settled in common stock, cash, or a combination thereof, at the Company’s election. During periods of net income, the Company’s intent and ability to settle the Convertible Notes in cash could impact the computation of diluted net income per common share.

Potentially dilutive common shares have been excluded from the diluted net loss per common share computations for the years ended December 31, 2013, 2012, and 2011 because such securities have an anti-dilutive effect on net loss per common share due to the Company’s net loss in each of these years. Outstanding securities, and the number of potentially dilutive common shares underlying such securities, were as follows:

	December 31,
	2013		2012		2011
Stock options		6,615		7,038		8,604
Convertible Notes, principal amount		5,050		5,050		—
Stock appreciation rights		503		471		525
Restricted stock units		311		374		203
ESPP shares		52		—		—
Warrants		20		46		46
Performance shares		—		—		125
Total		12,551		12,979		9,503