Warrants (Tables)

12 Months Ended

Dec. 31, 2016

Warrants Tables

Warrant activity and summary

The following table summarizes activity with respect to our common stock warrants for the periods shown below (in thousands):

	Warrants to		Weighted-
	purchase		average
	common		exercise
	shares		price
Outstanding at January 1, 2014	8,091	$	3.07
Granted:
Exercise price less than intrinsic value	-		-
Exercise price greater than intrinsic value	2,148		2.47
Exercised	(3,713)		2.67
Canceled/expired	-		-
Outstanding at December 31, 2014	6,526		3.08
Granted:
Exercise price less than intrinsic value	-		-
Exercise price greater than intrinsic value	-		-
Exercised	(1,487)		2.19
Canceled/expired	-		-
Outstanding at December 31, 2015	5,039		3.34
Granted:
Exercise price less than intrinsic value	-		-
Exercise price greater than intrinsic value	-		-
Exercised	-		-
Canceled/expired	(1,278)		6.24
Outstanding at December 31, 2016	3,761	$	2.23
Exercisable at December 31, 2016	3,761	$	2.23

The following table summarizes information about our common stock warrants outstanding and exercisable at December 31, 2016 (in thousands):

	Warrants outstanding				Warrants exercisable
		Weighted-
		average		Weighted-			Weighted-
	Outstanding at	remaining		average	Exercisable at		average
	December 31,	contractual term		exercise	December 31,		exercise
Range of exercise prices	2016	(in years)		price	2016		price
$1.76 - $3.08	3,761	1.38	$	2.23	3,761	$	2.23
	3,761				3,761