Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Equity Instruments Other Than Options, Activity

The table below summarizes award activity.

	Nine Months Ended
	September 30, 2016				September 30, 2015
	Number of Awards		Weighted average grant-date fair value		Number of Awards		Weighted average grant-date fair value
Outstanding at beginning of period	1,157,659		$	7.52	1,406,550		$	6.21
Granted	294,060		15.43		390,200		9.61
Converted	(160,500	)	7.20		(263,791	)	6.42
Expired	—		—		(1,600	)	10.11
Forfeited	(9,200	)	10.23		(13,800	)	7.36
Outstanding at end of period	1,282,019		$	9.36	1,517,559		$	7.03
Vested	338,919		$	6.12	329,059		$	5.61

Schedule of Share-based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions

The market condition awards were valued using a Monte Carlo simulation technique, a risk-free interest rate of 1.1% and a volatility of 36.9% based on volatility over three years using daily stock prices.