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Basic and Diluted Net IncomePer Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
For the Years Ended
December 31,
2012
 
2011
 
2010
Numerator—Basic
 
 
 
 
 
 
Net loss, basic
 
$
(43,474
)
 
$
(1,529
)
 
$
(369
)
Numerator—Diluted
 
 
 
 
 
 
Net loss, basic
 
$
(43,474
)
 
$
(1,529
)
 
$
(369
)
Interest on convertible senior notes, net of tax benefit (B)
 
—

 
—

 
—

Net loss, diluted
 
$
(43,474
)
 
$
(1,529
)
 
$
(369
)
Denominator—Basic
 
 
 
 
 
 
Weighted average shares used to calculate net loss per share, basic
 
27,174

 
25,413

 
24,144

Denominator—Diluted
 
 
 
 
 
 
Weighted average shares used to calculate net loss per share, basic
 
27,174

 
25,413

 
24,144

Effect of escrow shares (A)
 
—

 
—

 
—

Effect of convertible notes (B)
 
—

 
—

 
—

Effect of dilutive restricted stock (C)(D)
 
—

 
—

 
—

Effect of dilutive stock options (C)
 
—

 
—

 
—

Weighted average shares used to calculate net loss per share, diluted
 
27,174

 
25,413

 
24,144

Net loss per share:
 
 
 
 
 
 
Basic
 
$
(1.60
)
 
$
(0.06
)
 
$
(0.02
)
Diluted
 
$
(1.60
)
 
$
(0.06
)
 
$
(0.02
)