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Capital Stock (Tables)
 9 Months Ended
Sep. 30, 2017
Equity [Abstract]  
Schedule of stockholders equity
Consolidated statements of stockholders' equity as of September 30, 2017 and 2016 are as follows (in thousands):
 
 
 
 
 
 
 
 
Accumulated
 
 
 
 
 
 
 
 
 
 
Additional
 
Other
 
 
 
Total
 
 
Common Stock
 
Paid-in
 
Comprehensive
 
Accumulated
 
Stockholders’
 
 
Shares
 
Amount
 
Capital
 
Income
 
Deficit
 
Equity
December 31, 2015
 
40,343

 
$
4

 
$
305,981

 
$
405

 
$
(283,511
)
 
$
22,879

Exercise of stock options
 
361

 
—

 
939

 
—

 
—

 
939

Release of stock awards
 
911

 
—

 
—

 
—

 
—

 
—

Employee stock-based compensation
 
—

 
—

 
3,861

 
—

 
—

 
3,861

Cancelled shares
 
(397
)
 
—

 
(1,523
)
 
—

 
—

 
(1,523
)
Total comprehensive loss
 
—

 
—

 
—

 
(22
)
 
(3,298
)
 
(3,320
)
September 30, 2016
 
41,218

 
$
4

 
$
309,258

 
$
383

 
$
(286,809
)
 
$
22,836

 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2016
 
41,255

 
$
4

 
$
311,164

 
$
—

 
$
(292,069
)
 
$
19,099

Exercise of stock options
 
64

 
—

 
175

 
—

 
—

 
175

Release of stock awards
 
1,096

 
—

 
—

 
—

 
—

 
—

Employee stock-based compensation
 
—

 
—

 
5,212

 
—

 
—

 
5,212

Cancelled shares
 
(397
)
 
—

 
(1,670
)
 
—

 
—

 
(1,670
)
Issuance of common stock, net of issuance costs
 
6,325

 
1

 
23,229

 
—

 
—

 
23,230

Total comprehensive loss
 
—

 
—

 
—

 
13

 
(23,966
)
 
(23,953
)
September 30, 2017
 
48,343

 
$
5

 
$
338,110

 
$
13

 
$
(316,036
)
 
$
22,092