Employee Benefits

12 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Employee Benefits

Employee Benefits

The Company has a 401(k) retirement plan (the “Vertex 401(k) Plan”) in which substantially all of its permanent U.S. employees are eligible to participate. Participants may contribute up to 60% of their annual compensation to the Vertex 401(k) Plan, subject to statutory limitations. The Company may declare discretionary matching contributions to the Vertex 401(k) Plan that are payable in Vertex common stock. The match is paid in the form of fully vested interests in a Vertex common stock fund. Employees have the ability to transfer funds from the stock fund invested in Vertex common stock, subject to certain restrictions. As of December 31, 2012, 854,000 shares of common stock remained available for grant under the Vertex 401(k) Plan. The Company declared matching contributions to the Vertex 401(k) Plan as follows:

	2012		2011		2010
	(in thousands)
Discretionary matching contributions during the year ended December 31,	$	10,261	$	8,619	$	6,552
Shares issued during the year ended December 31,	242		183		174
Shares issuable as of the year ended December 31,	53		62		42