Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

As of December 31, 2012 and 2011, the fair value carrying amounts of the Company's derivative instruments are recorded as follows:

		Asset Derivatives				Liability Derivatives
	Balance Sheet Caption	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011
		(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swaps	Accrued liabilities	$	—	$	—	$	530	$	—
Interest rate swaps	Other long-term liabilities	—		—		690		—
Total derivatives designated as hedging instruments		$	—	$	—	$	1,220	$	—

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

Fair Value Measurements, Recurring and Nonrecurring

Fair value measurements and the fair value hierarchy level for the Company's assets and liabilities measured at fair value on a recurring basis as of December 31, 2012 are shown below. There were no derivative instruments outstanding as of December 31, 2011.

		December 31, 2012
Description	Frequency	Asset / (Liability)			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
		(dollars in thousands)
Interest rate swaps	Recurring	$	(1,220	)	$	—	$	(1,220	)	$	—