Debt (Tables)

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Components of debt

The components of debt at June 30, 2015 and December 31, 2014 were as follows (in thousands):

	June 30, 2015		December 31, 2014
Unsecured promissory note - Quercus Trust (1)	$	70	$	70
Long-term debt	$	70	$	70

(1) Note matures on June 1, 2109 and bears interest at 1 percent.