Exhibit 12.2

Computation of Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends

Amounts in thousands

	Year ended December 31,
	2013			2012			2011			2010			2009
Earnings:
Income from continuing operations before noncontrolling interest in consolidated subsidiaries and income from equity investees	$	69,524		$	47,185		$	27,654		$	30,579		$	15,708
Add: Income tax expense		936			1,326			1,524			1,131			937
Add: Fixed charges		32,720			33,547			38,848			32,007			50,410
Add: Distributed income of equity investees		2,630			2,184			944			494			686
Less: Capitalized interest		(113	)		(149	)		(72	)		(83	)		(159	)
Preferred dividend requirements of consolidated subsidiaries		—			—			—			—			—
Earnings (1)		105,697			84,093			68,898			64,128			67,582
Fixed charges:
Interest expense		31,166			32,330			37,365			30,681			48,847
Amortization of financing fees		834			836			1,184			1,030			1,203
Capitalized interest		113			149			72			83			159
Estimate of interest included in rent expense		607			232			227			213			201
Preferred stock dividends		—			—			—			—			—
Fixed charges (2)	$	32,720		$	33,547		$	38,848		$	32,007		$	50,410
Ratio of earnings to combined fixed charges and preferred stock dividends (1)/(2)		3.23			2.51			1.77			2.00			1.34