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Net (Loss) Income per Share of Common Stock (Tables)
 6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted (loss) earnings per share:
 
Three months ended June 30,
 
Six months ended June 30,
(dollars in thousands, except earnings per share)
2012
 
2011
 
2012
 
2011
Numerators for earnings per share —
 
 
 
 
 
 
 
—Net (loss) income that is available to common shareholders
$
(10,143
)
 
$
15,406

 
$
(9,502
)
 
$
14,405

Denominator for basic earnings per share —
 
 
 
 
 
Weighted average shares outstanding
20,837,843

 
20,099,003

 
20,803,629

 
20,027,493

Effect of stock options and restricted stock units
—

 
627,566

 
—

 
642,300

Effect of warrants
—

 
134,877

 
—

 
142,577

Total effect of dilutive securities (1)
—

 
762,443

 
—

 
784,877

Denominator for diluted earnings per share —
 
 
 
 
 
 
 
—Adjusted weighted average shares and assumed conversions
20,837,843

 
20,861,446

 
20,803,629

 
20,812,370

Basic (loss) earnings per share
$
(0.49
)
 
$
0.77

 
$
(0.46
)
 
$
0.72

Diluted (loss) earnings per share
$
(0.49
)
 
$
0.74

 
$
(0.46
)
 
$
0.69

______________________________
(1) The effect of employee stock options and restricted stock units, 437,680 and 424,483 shares for the three months and six months ended June 30, 2012, respectively, were anti-dilutive and thus not included in the earnings per share calculation. This amount would have been dilutive if not for the net loss.