Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Note 4—Supplemental Cash Flow Information

The following table contains additional cash flow information for the periods reported.

	December 31, 2012		December 31, 2011
Supplemental disclosures of cash flow information:
Cash paid for interest	$	1,885	$	435
Non-cash investing and financing activities:
Accrued preferred stock dividend	$	—	$	487
Financing of insurance premiums		—		150
Subscription receivable		2,004		550
Conversion of note payable		2,385		—
Issuance of additional warrants		11,077		4,994
Conversion of preferred stock into common stock		—		1,203
Conversion of preferred stock derivative balance into common stock		1,350		7,291
Cashless exercise of warrants recorded previously as a liability		17		4,842
Warrants liability reclassified to equity		15,048		—
Accrued derivative liability		793		252