XML 19 R22.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Details 4) (USD $)	3 Months Ended		36 Months Ended
Stock-Based Compensation (Details 4) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013
Stock-Based Compensation
Stock compensation expense	$ 770,000	$ 206,000	$ 2,878,000
2012 ESPP
Stock-Based Compensation
Common stock reserved for future issuance (in shares)	275,000		275,000
Stock compensation expense	$ 13,000

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References+ Details

- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References+ Details