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Restructuring
 3 Months Ended
Mar. 31, 2012
Restructuring and Related Activities [Abstract]  
Restructuring and Related Activities Disclosure [Text Block]
Restructuring
In December 2011, the Company implemented a workforce reduction of approximately 70 employees from all areas of the Company. The Company recorded $4.2 million as a restructuring charge for the amount of one-time benefits provided to affected employees. Included in these costs was a net increase in non-cash stock-based compensation of $0.4 million reflecting a modification of certain stock-based awards previously granted to the affected employees. Additionally, during 2011, in connection with excess and vacated facilities under long-term non-cancelable leases, the Company recorded $0.7 million as a restructuring charge for the estimated future lease payments, less estimated sublease income, for these vacated facilities.
The following table summarizes the accrual and usage of the restructuring charges (in millions):

 
Leases
 
Severance
 
Total
Ending Balance, December 31, 2011
$
0.6

 
$
3.3

 
$
3.9

        Restructuring charge
$
—

 
0.1

 
0.1

        Cash payments
$
—

 
(2.2
)
 
(2.2
)
Ending Balance, March 31, 2012
$
0.6

 
$
1.2

 
$
1.8

Current portion of accrued restructuring
$
0.1

 
$
1.2

 
$
1.3

Long-term portion of accrued restructuring
$
0.5

 
$
—

 
$
0.5