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STOCKHOLDERS' DEFICIT (Tables)
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Carrying value of Series A and C Preferred Stock
The following table sets forth the activity recorded during the year ended December 31, 2017 related to the Series A Preferred Stock (in thousands) issued for both the PIPE Transaction and the Rights Offering:
Series A Preferred Stock carrying value at December 31, 2015
$
62,918

Exchange of Series A for Series C
(60,776
)
Accretion of discount related to issuance costs
40

Dividends recorded through December 31, 2016 1
280

Series A Preferred Stock carrying value at December 31, 2016
$
2,462

Accretion of discount related to issuance costs
53

Dividends recorded through December 31, 2017 1
312

Series A Preferred Stock carrying value at December 31, 2017
$
2,827


1 Dividends recorded reflect the increase in the Liquidation Preference associated with unpaid dividends.
The following table sets forth the activity recorded during the year ended December 31, 2017 related to the Series C Preferred Stock (in thousands):
Series C Preferred Stock carrying value at December 31, 2015
$
—

Exchange of Series A for Series C
60,776

Accretion of discount related to issuance costs
652

Dividends recorded through December 31, 2016 1
8,112

Series C Preferred Stock Carrying Value at December 31, 2016
$
69,540

Accretion of discount related to issuance costs
648

Dividends recorded through December 31, 2017 1
9,064

Series C Preferred Stock carrying value at December 31, 2017
$
79,252


1 Dividends recorded reflect the increase in the Liquidation Preference associated with unpaid dividends.