Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instrument Detail [Abstract]

Fair Values of Derivative Instruments

The following table presents the gross fair values of derivative instruments on our Condensed Consolidated Balance Sheets:

		Asset Derivatives					Liability Derivatives
(Dollars in thousands)	Location	March 31, 2018		December 31, 2017		Location	March 31, 2018		December 31, 2017
Derivatives designated in fair value hedging relationships:
Interest rate contracts	Other assets, current	$	—	$	13		$	—	$	—
Interest rate contracts	Other assets, non-current		—		—			—		—
		$	—	$	13		$	—	$	—
Derivatives designated in cash flow hedging relationships:
Interest rate contracts	Other assets, non-current	$	1,869	$	1,156	Other long-term obligations	$	1,670	$	—

Effect of Derivatives on Consolidated Statements of Income

The following table details the effect of derivatives on our Consolidated Statements of Income:

		Three Months Ended March 31,
(Dollars in thousands)	Location	2018			2017
Derivatives designated in fair value hedging relationships:
Interest rate contracts
Realized gain (loss) on interest rate contracts1	Interest expense	$	(36	)	$	167
Derivatives designated in cash flow hedging relationships:
Interest rate contracts
Loss recognized in other comprehensive income, net of tax (effective portion)		$	(992	)	$	(2	)
Loss reclassified from accumulated other comprehensive income (effective portion)1	Interest expense	$	(2	)	$	(50	)

¹ Realized gain (loss) on hedging instruments consists of net cash settlements and interest accruals on the fair value interest rate swaps during the periods. Net cash settlements are included in the supplemental cash flow information within interest, net of amounts capitalized in the Condensed Consolidated Statements of Cash Flows.