Stock Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

The following table summarizes the option activity for each of the years ended December 31, 2016 and 2015 under the 2004 Plan:

	Number of Shares			Weighted- Average Exercise Price Per Share		Aggregate Intrinsic Value
						(in thousands)
Outstanding as of December 31, 2014		10,958		$	40.58
Exercised		—		$	—
Expired		(41	)	$	40.58
Outstanding as of December 31, 2015		10,917		$	40.58
Exercised		—		$	—
Expired		—		$	—
Cancelled		(291	)	$	40.58
Outstanding as of December 31, 2016		10,626		$	40.58	$	—
Vested and exercisable as of December 31, 2016		10,626		$	40.58	$	—
Weighted-average years remaining on contractual life		1.25
Unrecognized compensation cost related to non-vested stock    options	$	—

The following table summarizes the option activity for each of the years ended December 31, 2016 and 2015 under the 2014 Plan:

	Number of Shares			Weighted- Average Exercise Price Per Share		Aggregate Intrinsic Value
						(in thousands)
Outstanding as of December 31, 2014		900,117		$	4.34
Granted		730,500		$	5.69
Exercised		(9,857	)	$	4.34
Cancelled		—		$	—
Outstanding as of December 31, 2015		1,620,760		$	4.95
Granted		1,156,500		$	7.77
Exercised		(84,428	)	$	4.71
Cancelled		(28,000	)	$	6.79
Outstanding as of December 31, 2016		2,664,832		$	6.16	$	2,064
Vested and exercisable as of December 31, 2016		820,884		$	4.97	$	930
Weighted-average years remaining on contractual life		8.59
Unrecognized compensation cost related to non-vested stock    options	$	7,692