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Basic and Diluted Net IncomePer Share (Tables)
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
 
 
For the Years Ended
December 31,
2014
 
2013
 
2012
Numerator—Basic
 
 
 
 
 
 
Net loss, basic
 
$
(27,581
)
 
$
(49,404
)
 
$
(43,474
)
Numerator—Diluted
 
 
 
 
 
 
Net loss, basic
 
$
(27,581
)
 
$
(49,404
)
 
$
(43,474
)
Interest on convertible senior notes, net of tax benefit (B)
 
—

 
—

 
—

Net loss, diluted
 
$
(27,581
)
 
$
(49,404
)
 
$
(43,474
)
Denominator—Basic
 
 
 
 
 
 
Weighted average shares used to calculate net loss per share, basic
 
34,699

 
28,805

 
27,174

Denominator—Diluted
 
 
 
 
 
 
Weighted average shares used to calculate net loss per share, basic
 
34,699

 
28,805

 
27,174

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
 
34,699

 
28,805

 
27,174

Net loss per share:
 
 
 
 
 
 
Basic
 
$
(0.79
)
 
$
(1.72
)
 
$
(1.60
)
Diluted
 
$
(0.79
)
 
$
(1.72
)
 
$
(1.60
)