Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2017

The fair value of each stock option granted was estimated using the following weighted-average assumptions:

	Year Ended
	December 31,
	2015
Fair value of options granted	$	4.10
Expected volatility		84	%
Risk-free interest rate		1.6	%
Expected lives		6.0 years
Dividend rate		1.6	%

The following is a summary of stock option activity: (in thousands, except exercise price data and contractual life data):

Options	Number of Shares			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2014		5,555		$	3.33
Granted		75		$	6.45
Exercised		(966	)		2.23			$	4,954
Forfeited or cancelled		(1,241	)		7.07
Outstanding at December 31, 2015		3,423		$	2.35			$	18,341
Exercised		(925	)	$	2.36			$	4,278
Forfeited or cancelled		(165	)		3.61
Outstanding at December 31, 2016		2,333			2.26			$	11,061
Exercised		(915	)		1.89			$	3,689
Forfeited or cancelled		(90	)		2.48
Outstanding at December 31, 2017		1,328		$	2.50		4.66	$	6,175
Vested and Exercisable at December 31, 2017		1,252		$	2.32		4.52	$	6,045
Vested and Expected to Vest at December 31, 2017		1,082		$	2.52		5.10	$	5,008

The following is a summary of non-vested restricted stock and restricted stock units activity: (in thousands, except grant date fair value data):

	Number of Shares			Weighted-Average Grant Date Fair Value
Nonvested balance at December 31, 2014		1,169		$	4.15
Granted		764			8.25
Vested		(614	)		4.91
Forfeited or cancelled		(51	)		4.52
Nonvested balance at December 31, 2015		1,268		$	6.39
Granted		931			6.78
Vested		(685	)		6.28
Forfeited or cancelled		(134	)		6.25
Nonvested balance at December 31, 2016		1,380		$	6.73
Granted		1,104			7.31
Vested		(844	)		6.64
Forfeited or cancelled		(83	)		7.21
Nonvested balance at December 31, 2017		1,557		$	7.18