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Equity (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Nonvested Option Activity

		Number of Shares				Weighted Average Grant Date Fair Value
Nonvested options – beginning of year			367,470			$	6.68
Nonvested options granted			139,250			$	7.42
Nonvested options vested or forfeited			(121,215	)		$	6.06
Nonvested options – end of year			385,505			$	7.14

Schedule of Stock Option Activity

		Year ended December 31,
		2014								2013								2012
		Options				Weighted Average Exercise Price				Options				Weighted Average Exercise Price				Options				Weighted Average Exercise Price
Shares under option - beginning of year			643,595			$	19.58				716,235			$	14.41				823,275			$	13.20
Options granted			139,250				27.93				136,350				34.84				128,850				19.25
Options exercised			(136,640	)			11.19				(204,240	)			11.68				(226,160	)			12.72
Options cancelled			(6,710	)			19.37				(4,750	)			17.47				(9,730	)			15.37
Shares under option - end of year			639,495				23.19				643,595				19.58				716,235				14.41

Summary of Options Exercised

		Year Ended December 31,
		2014				2013				2012
Proceeds from stock options exercised		$	1,529			$	1,668			$	1,305
Tax benefits		$	670			$	700			$	100
Intrinsic value of stock options exercised		$	2,733			$	4,088			$	1,359

Schedule of Assumptions Used to Estimate Fair Value of Stock Options

		Year Ended December 31,
		2014				2013				2012
Weighted-average expected stock-price volatility			34	%			37	%			38	%
Weighted-average expected option life			5.0 years				5.0 years				5.0 years
Weighted-average risk-free interest rate			1.7	%			1.7	%			0.7	%
Weighted-average dividend yield			1.8	%			2.7	%			1.7	%

Schedule of Information about Options Outstanding and Exercisable by Exercise Price

							Options outstanding
		Number					weighted average remaining		Options
Exercise prices		outstanding					contractual life		exercisable
$12.14			57,440				1.00 years			57,440
$13.45			250				0.08 years			250
$15.59 - $15.62			100,370				2.98 years			55,810
$17.07 - $17.94			4,375				1.71 years			2,000
$19.03 - $19.33			203,410				3.13 years			111,410
$21.76			4,000				3.09 years			1,000
$22.20			4,000				4.09 years			800
$27.80			133,750				6.00 years			—
$29.36			2,000				4.69 years			—
$32.12			3,500				4.09 years			—
$35.75			126,400				5.00 years			25,280
Totals			639,495				3.89 years			253,990

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Tabular disclosure of the amount of cash proceeds received from the exercise of stock options and similar instruments granted under share-based payment arrangements and the tax benefit realized from stock options exercised during the period. Disclosure may also include the intrinsic value of stock options exercised during the period.

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Tabular disclosure of the changes in outstanding nonvested shares.

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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