Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

As of September 30, 2013 and December 31, 2012, the fair value carrying amount of the Company's interest rate swaps are recorded as follows:

		Asset / (Liability) Derivatives
	Balance Sheet Caption	September 30, 2013			December 31, 2012
		(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swap	Other assets	$	5,240		$	—
Interest rate swap	Accrued liabilities	(500		)	(530		)
Interest rate swap	Other long-term liabilities	—			(690		)
Total derivatives designated as hedging instruments		$	4,740		$	(1,220	)

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

nine months ended September 30, 2013 and 2012:

	Amount of Income (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)						Amount of Loss Reclassified from AOCI into Earnings
							Three months ended September 30,						Nine months ended September 30,
	As of September 30, 2013		As of December 31, 2012			Location of Loss Reclassified from AOCI into Earnings (Effective Portion)	2013			2012			2013			2012
	(dollars in thousands)						(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swaps	$	2,930	$	(760	)	Interest expense	$	(240	)	$	(140	)	$	(560	)	$	(250	)

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

		Amount of Loss Recognized in Earnings on Derivatives
	Location of Loss Recognized in Earnings on Derivatives	Three months ended September 30,					Nine months ended September 30,
		2013			2012		2013			2012
		(dollars in thousands)
Derivatives not designated as hedging instruments
Interest rate swaps	Interest expense	$	(140	)	$	—	$	(410	)	$	—

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 September 30, 2013 and December 31, 2012 are shown below.  

	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)
September 30, 2013	Interest rate swaps	Recurring	$	4,740		$	—	$	4,740		$	—
December 31, 2012	Interest rate swaps	Recurring	$	(1,220	)	$	—	$	(1,220	)	$	—