Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Abstract]

Property plant and equipment

(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
			2012			2011
Land		Indefinite	$	35,371		$	30,466
Land Improvements		20 – 50		38,708			38,470
Buildings		30		20,522			18,853
Furniture, Office and Computer Equipment		3 – 10		26,496			24,942
Machinery and Service Equipment		5 – 20		16,186			13,000
				137,283			125,731
Less Accumulated Depreciation				(39,301	)		(31,712	)
				97,982			94,019
Construction In Progress				3,049			683
				$101,031			$94,702

Weighted-average number of shares of common stock used to calculate basic and diluted earnings per share

(in thousands)	Year Ended December 31,
	2012		2011		2010
Weighted-average common stock for calculating basic earnings per share		24,759		24,349		23,944
Effect of potentially dilutive securities from equity-based compensation		397		411		345
Weighted-average common stock for calculating diluted earnings per share		25,156		24,760		24,289

Securities not included in the computation of diluted earnings per share

(in thousands)	Year Ended December 31,
	2012		2011		2010
Options to purchase common stock		1,049		1,131		1,066

Summary of allowance for doubtful accounts activity

(in thousands)	2012			2011
Beginning Balance, January 1	$	1,500		$	1,700
Provision for doubtful accounts		4,263			1,755
Write-offs, net of recoveries		(2,763	)		(1,955	)
Ending Balance, December 31	$	3,000		$	1,500

Summary of fair value of option granted

	Year Ended December 31,
	2012			2011			2010
Expected term (in years)		5.0			5.0			5.2
Expected volatility		52.1	%		51.6	%		51.2	%
Expected dividend yields		3.2	%		3.4	%		3.8	%
Risk-free interest rates		0.8	%		2.0	%		2.2	%