Stock-Based Compensation and Plans (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Share-based Compensation, Stock Options, Activity

Option activity under the Plan for the year ended December 31, 2016, was as follows (in thousands, except as noted):

					Weighted
			Weighted-		Average
			Average		Remaining		Aggregate
			Exercise		Contractual		Intrinsic
	Options		Price		Term		Value
			(per share)		(in years)
Year Ended December 31, 2016
Outstanding at December 31, 2015		5,752	$	1.05		5.3	$	1,972
Granted		1,315		2.54		9.3
Exercised		-		-
Forfeited/expired		-		-
Outstanding at December 31, 2016		7,067	$	1.33		5.2	$	2,241
Vested and expected to vest December 31, 2016		6,728	$	1.27		5.0	$	2,239
Exercisable at December 31, 2016		5,442	$	1.01		4.1	$	2,236

Option activity under the Plan for the year ended December 31, 2015, was as follows (in thousands, except as noted):

					Weighted
			Weighted-		Average
			Average		Remaining		Aggregate
			Exercise		Contractual		Intrinsic
	Options		Price		Term		Value
			(per share)		(in years)
Year Ended December 31, 2015
Outstanding at December 31, 2014		5,428	$	1.03		6.0	$	8,829
Granted		349		1.46		9.3
Exercised		-		-
Forfeited/expired		(25)		2.71
Outstanding at December 31, 2015		5,752	$	1.05		5.3	$	1,972
Vested and expected to vest December 31, 2015		5,666	$	1.04		5.2	$	1,972
Exercisable at December 31, 2015		5,079	$	1.00		4.9	$	1,839

Option activity under the Plan for the year ended December 31, 2014, was as follows (in thousands, except as noted):

					Weighted
			Weighted-		Average
			Average		Remaining		Aggregate
			Exercise		Contractual		Intrinsic
	Options		Price		Term		Value
			(per share)		(in years)
Year Ended December 31, 2014
Outstanding at December 31, 2013		6,032	$	0.90		6.8	$	18,672
Granted		325		2.57		9.4
Exercised		(525)		0.83
Forfeited/expired		(404)		0.68
Outstanding at December 31, 2014		5,428	$	1.03		6.0	$	8,829
Vested and expected to vest December 31, 2014		5,428	$	1.03		6.0	$	8,829
Exercisable at December 31, 2014		4,735	$	0.99		5.6	$	7,931

Warrant [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

For stock options granted during 2016, 2015 and 2014 the following weighted average assumptions were used in determining fair value:

	2016		2015		2014
Risk-free interest rate		1.37%		1.65%		2.12%
Expected volatility		109%		138%		174%
Expected term in years		6.1		6.1		6.7
Dividend yield		-%		-%		-%