Supplemental Disclosure of Cash Flow Information

12 Months Ended

Dec. 31, 2016

Supplemental Disclosure of Cash Flow Information

Supplemental Disclosure of Cash Flow Information

13. Supplemental Disclosure of Cash Flow Information

Supplemental disclosure of cash flow information for the periods presented is as follows:

	Year Ended December 31,
	2016		2015		2014
	(In thousands)
Supplemental disclosure of cash flow information:
Cash paid for interest	$	72	$	93	$	49
Supplemental disclosure of non-cash financing and investing activities:
Conversion of Series D preferred stock to common stock	$	—	$	—	$	5,464
Conversion of Series E preferred stock to common stock	$	—	$	—	$	5,528
Non-cash property additions	$	425	$	123	$	324
Accrued 2016 financing transaction costs paid in 2017	$	166	$	—	$	—