Share-Based Payments (Tables)

12 Months Ended

Dec. 31, 2017

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Changes in Non-Vested Shares of Restricted Common Stock

The following table provides activity of restricted common stock for the years ended December 31, 2017,  2016 and 2015:

	Shares	Weighted  Average Grant Date Fair Value Per Share
Balance, December 31, 2014	114,505	$	4.94
Restricted common stock vested	(96,172)		6.92
Restricted common stock granted	255,151		6.89
Restricted common stock forfeited	(14,161)		8.08
Balance, December 31, 2015	259,323		7.05
Restricted common stock vested	(122,141)		7.23
Restricted common stock granted	527,889		6.64
Restricted common stock forfeited	(67,825)		6.88
Balance, December 31, 2016	597,246		6.63
Restricted common stock vested	(267,816)		6.81
Restricted common stock granted	417,720		5.20
Restricted common stock forfeited	(114,158)		5.93
Balance, December 31, 2017	632,992	$	5.74

Activity of Non-Vested Stock Options

The following table presents activity of nonvested common stock options during the years ended December 31, 2017, 2016 and 2015:

	Options	Weighted Average Exercise Price Per Share
Balance, December 31, 2014	81,400	$	7.62
Common stock options vested	(31,400)		3.84
Common stock options forfeited	(50,000)		10.00
Balance, December 31, 2015, 2016 and 2017	—	$	—

There was no activity related to nonvested common stock options during the years ended December 31, 2017 and 2016.

Activity of Exercisable Common Stock Options

The following table presents activity of exercisable common stock options during the years ended December 31, 2017,  2016 and 2015:

	Options	Weighted Average Exercise Price Per Share
Balance, December 31, 2014	986,300	$	6.08
Common stock options exercised	(242,050)		5.16
Common stock options vested	31,400		3.84
Balance, December 31, 2015	775,650		6.28
Common stock options exercised	(27,500)		4.76
Balance, December 31, 2016	748,150		6.33
Common stock options exercised	(750)		3.00
Common stock options expired	(379,800)		5.65
Balance, December 31, 2017	367,600	$	7.06

Intrinsic Value of Options Outstanding and Exercisable

The following table provides information pertaining to the intrinsic value of common stock options outstanding and exercisable as of December 31, 2017 and 2016:

	December 31,
(In millions)	2017		2016
Intrinsic value of common stock options outstanding	$	—	$	0.3
Intrinsic value of common stock options exercisable		—		0.3

Intrinsic Value of Options Exercised and Fair Value of Options Vested

The following table provides information pertaining to the intrinsic value of common stock options exercised and the fair value of common stock options that vested during the years ended December 31, 2017,  2016 and 2015:

	Year Ended December 31,
(In millions)	2017		2016		2015
Intrinsic value of common stock options exercised(1)	$	—	$	0.1	$	0.4
Fair value of common stock options vested(2)		—		—		1.2

⁽¹⁾ The intrinsic value of common stock options exercised is the difference between the fair value of the Company’s common stock on the exercise date and the exercise price.

The fair value of common stock options vested is based on the grant date fair value.

Summary of Vesting Information for RSU Awards Granted

The following tables provide vesting information for the Incentive RSU awards granted in the years ended December 31, 2017,  2016 and 2015:

Year Ended December 31, 2015 If the Company’s Compound Annualized TSR During the Performance Period is:	Restricted Stock Units that Vest
Less than 10%	—
10% to less than 15%	150,000
15% to less than 40%	250,000
40% or more	260,000

	TSR Payout
Years Ended December 31, 2016 and 2017	Factor (% of
If the Company’s Compound Annualized TSR Compared to the Russell 2000 Index Compound Annualized TSR During the Performance Period is:	TSR Target Share Amount)
More than 8 percentage points below the Russell 2000 Index TSR	—	%
8 percentage points below the Russell 2000 Index TSR	50	%
Equal to the Russell 2000 Index TSR	100	%
8 or more percentage points above the Russell 2000 Index TSR	150	%

Assumptions Used in Determining Fair Value of RSU Awards Granted

The following table provides assumptions used in determining the fair value of Incentive RSU awards granted during the years ended December 31, 2017,  2016 and 2015:

	Year Ended December 31,
(Weighted averages)	2017			2016			2015
Grant date fair value	$	4.57		$	7.02		$	7.53
Grant date closing stock price	$	5.10		$	6.74		$	11.05
Grant date closing index value		6,687.92			4,941.53			N/A
Volatility		47.00	%		48.66	%		48.90	%
Risk-free rate		1.49	%		0.85	%		0.84	%
Dividend yield		—	%		—	%		—	%
Probability of death or disability		N/A			N/A			5.00	%

Activity of RSUs

The following table presents activity of Incentive RSUs during the years ended December 31, 2017,  2016 and 2015:

	Restricted Stock Units	Grant Date Fair Value per Restricted Stock Unit
Balance, December 31, 2014	—	$	—
Restricted stock units awarded	260,000		7.53
Balance, December 31, 2015	260,000		7.53
Restricted stock units awarded	121,823		7.20
Restricted stock units forfeited	(27,765)		7.20
Balance, December 31, 2016	354,058		7.44
Restricted stock units awarded	165,777		4.57
Restricted stock units forfeited	(310,181)		7.20
Balance, December 31, 2017	209,654	$	5.53

Directors

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Activity of RSUs

The following table provides activity of Director RSUs in the year ended December 31, 2017:

	Restricted Stock Units	Grant Date Fair Value per Restricted Stock Unit
Balance, December 31, 2016	—	$	—
Restricted stock units awarded	67,972		3.00
Restricted stock units converted to common stock	(36,649)		3.11
Balance, December 31, 2017	31,323	$	2.87