Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of Recognized Stock Based Compensation

The following table summarizes employee and nonemployee stock based compensation for the years ended December 31, 2019 and 2018:

	Year Ending December 31,
Amounts in (000's)	2019		2018
Employee compensation:
Restricted stock	$	—	$	15
Total employee stock-based compensation    expense	$	—	$	15
Non-employee compensation:
Restricted stock	$	92	$	161
Total non-employee stock-based compensation    expense	$	92	$	161
Total stock-based compensation expense	$	92	$	176

Summary of Company's Stock Option Activity

The following summarizes the Company’s employee and non-employee stock option activity for the years ended December 31, 2019 and 2018:

	Number of Options (000's)		Weighted Average Exercise Price		Weighted Average Remaining Contract Life (in years)		Aggregate Intrinsic Value (000's) (a)
Outstanding and vested at December 31, 2017		15	$	47.77	6.4		$	—
Outstanding and vested at December 31, 2018		15	$	47.77		5.4	$	—
Outstanding and vested at December 31, 2019		15	$	47.77		4.4	$	—

^(a) Represents the aggregate gain on exercise for vested in-the-money options.

Schedule of Exercise Price Range

The following summary information reflects stock options outstanding, vested and related details as of December 31, 2019:

	Stock Options Outstanding						Stock Options Exercisable
Exercise Price	Number Outstanding (000's)		Weighted Average Remaining Contractual Term (in years)		Weighted Average Exercise Price		Vested and Exercisable (000's)		Weighted Average Exercise Price
$15.72 - $47.99		10		4.7	$	46.84		10	$	46.84
$48.00 - $51.60		5		3.7	$	49.42		5	$	49.42
Total		15		4.4	$	47.77		15	$	47.77

Summary of Company's Restricted Stock Activity

The following summarizes the Company’s restricted stock activity for the years ended December 31, 2019 and 2018:

	Number of Shares (000's)			Weighted Average Grant Date Fair Value
Unvested at December 31, 2017		13		$	21.91
Granted		41		$	3.60
Vested		(6	)	$	22.92
Forfeited		—		$	—
Unvested at December 31, 2018		48		$	6.20
Granted		—		$	—
Vested		(19	)	$	8.65
Forfeited		—		$	—
Unvested at December 31, 2019		29		$	4.63

Warrant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Exercise Price Range

The following summary information reflects warrants outstanding, vested and related details as of December 31, 2019:

	Warrants Outstanding						Warrants Exercisable
Exercise Price	Number Outstanding (000's)		Weighted Average Remaining Contractual Term (in years)		Weighted Average Exercise Price		Vested and Exercisable (000's)		Weighted Average Exercise Price
$36.00 - $47.99		14		2.4	$	46.71		14	$	46.71
$48.00 - $59.99		42		4.5	$	52.99		42	$	52.99
$60.00 - $70.80		2		3.4	$	70.80		2	$	70.80
Total		58		4.0	$	52.09		58	$	52.09

Schedule of Common Stock Warrant Activity

The following summarizes the Company’s employee and non-employee common stock warrant activity for the years ended December 31, 2019 and 2018:

	Number of Warrants (000's)			Weighted Average Exercise Price		Weighted Average Remaining Contract Life (in years)		Aggregate Intrinsic Value (000's) (a)
Outstanding and vested at December 31, 2017		85		$	45.53		4.7
Outstanding and vested at December 31, 2018		85		$	45.53		3.7	$	—
Expired		(27	)	$	31.72
Outstanding and vested at December 31, 2019		58		$	52.09		4.0	$	—

^(a) Represents the aggregate gain on exercise for vested in-the-money warrants.