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SHAREHOLDERS' EQUITY (Tables)
 3 Months Ended
Mar. 31, 2013
Equity [Abstract]  
Shareholders equity
 
Series A
Nonconvertible
 
 
Additional
 
Accumulated Other
 
 
Total
 
Preferred Stock
Common Stock
Paid-In
Accumulated
Comprehensive
Treasury Stock
Shareholders’
 
Shares
Amount
Shares
Amount
Capital
Deficit
Loss
Shares
Amount
Equity
Balance,
January 1, 2013
200,000

$
2

46,561,437

$
465

$
564,883

$
(204,211
)
$
(5,702
)
(205,902
)
$
(5,202
)
$
350,235

Net loss
—

—

—

—

—

(4,758
)
—

—

—

(4,758
)
Other comprehensive income
—

—

—

—

—

—

166

—

—

166

Repurchase of common stock
—

—

—

—

—

—

—

(195,599
)
(5,456
)
(5,456
)
Exercise of common stock options, net of tendered shares
—

—

5,332

—

66

—

—

—

—

66

Stock-based employee compensation, net of shares withheld for employee taxes (A)
—

—

(7,981
)
—

(1,187
)
—

—

—

—

(1,187
)
Issuance of common stock to Board of Directors and Scientific Advisory Board (B)
—

—

24,153

1

524

—

—

—

—

525

Issuance of common stock under an Employee Stock Purchase Plan
—

—

4,258

—

93

—

—

—

—

93

Balance,
March 31, 2013
200,000

$
2

46,587,199

$
466

$
564,379

$
(208,969
)
$
(5,536
)
(401,501
)
$
(10,658
)
$
339,684


(A)
Includes $435 (13,356 shares) that was accrued for in a previous period and charged to expense when earned, but issued in 2013, less shares withheld for taxes in the amount of $153 (4,672 shares).
(B)
Includes $300 (9,212 shares) that was earned in a previous period and charged to expense when earned, but issued in 2013.