Stock Benefit Plans and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

A summary of the Company’s stock option activity under the Plans and related information is as follows (in thousands, except as indicated and per share data):

	Shares			Weighted average exercise price		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2018		4,723		$	3.64
Granted		195		$	4.41
Exercised		(161	)	$	2.75
Forfeited		(542	)	$	7.00
Outstanding at December 31, 2019		4,215		$	3.27		7.80	$	17,961
Options vested and exercisable at December 31, 2019		2,238		$	3.71		7.40	$	9,438
Options vested and expected to vest at December 31, 2019		4,028		$	3.29		7.77	$	17,177

Summary of Information about Restricted Stock Awards, Restricted Stock Units and Performance-Based Restricted Units Activity (Detail)

The following table summarizes information about the restricted stock awards, restricted stock units and performance-based restricted units activity (in thousands, except as indicated and per share data):

	Shares			Weighted average grant date fair value		Weighted average remaining recognition period (in years)
Unvested at December 31, 2018		3,270		$	2.94
Awarded		4,802		$	1.92
Vested		(1,224	)	$	2.83
Forfeited		(121	)	$	3.11
Unvested at December 31, 2019		6,727		$	2.17		2.32

Summary of Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following (in thousands):

	December 31, 2019
Stock options outstanding		4,215
Unvested restricted stock awards		6,727
Employee stock purchase plan		117
Series A convertible preferred stock		67
Warrants outstanding		26,557
Authorized for future grant under the Distributor and Development Services plans		3,908
Authorized for future grant under the Management Objective Strategic Incentive Plan		445
Authorized for future grant under the Plans		1,628
		43,664