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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Dec. 31, 2013

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

Schedule of Nonvested Share Activity [Table Text Block]

The following summarizes the activity of our PSUs and RSUs awarded under the 2013 Incentive Plan for the year ended December 31, 2015:

		PSUs							RSUs
		Number of shares			Weighted Average Grant-Date Fair Value				Number of shares				Weighted Average Grant-Date Fair Value
Outstanding, December 31, 2014		116,559			$	29.66			64,864				$	30.45
Granted		116,636			36.17				140,167				36.16
Performance condition adjustment		27,438			30.32				—				—
Vested		(112,552	)		29.70				(41,026		)		30.50
Forfeited		(13,295	)		32.81				(10,662		)		34.00
Outstanding, December 31, 2015		134,786			$	35.09			$	153,343			$	35.41

Stock options activity [Table Text Block]

The following is a summary of our stock option activity:

		Number of Options			Weighted Average Exercise Price Per Option				Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
									(years)		(thousands)
Outstanding, December 31, 2014		141,232			$	27.19
Exercised		(8,705	)		27.19
Cancelled/Forfeited		(15,245	)		27.19
Outstanding, December 31, 2015		117,282			$	27.19			6.3		$	—
Vested and expected to vest, December 31, 2015		117,152			$	27.19			6.3		$	—
Exercisable, December 31, 2015		82,415			$	27.19			5.9		$	—

Assumptions used to calculate fair value of stock options [Table Text Block]

The fair value for stock option awards was estimated at the grant date using the Black-Scholes option valuation model with the following weighted average assumptions:

	Year Ended December 31, 2013
Expected volatility	60.9		%
Expected life (in years)	6.0
Risk-free interest rate	1.0		%
Expected dividends	—
Weighted average fair value per option granted	$	14.87

Stock-based compensation expense recognized [Table Text Block]

Total stock-based compensation recognized from PSUs, RSUs, and stock options net of estimated forfeitures, was as follows:

	Year Ended December 31
	2015				2014				2013
	(thousands)
PSUs	$	2,295			$	3,169			$	1,932
RSUs	2,995				2,018				274
Stock options	535				729				663
Total	$	5,825			$	5,916			$	2,869

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Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
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Tabular disclosure of the changes in outstanding nonvested shares.

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