Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2018

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following is changes in accumulated other comprehensive loss by component, net of tax, for the three months ending March 31, 2018 and 2017.

	For the Three Months Ended   March 31, 2018
Dollars in thousands	Gains and Losses on Other Post-Retirement Benefits		Gains and Losses on Cash Flow Hedges			Unrealized Gains (Losses) on Available-for-Sale Securities			Total
Beginning balance	$	398	$	(1,564	)	$	2,898		$	1,732
Other comprehensive income (loss) before reclassification	—		715			(2,779		)	(2,064		)
Amounts reclassified from accumulated other comprehensive income	—		—			(556		)	(556		)
Net current period other comprehensive income (loss)	—		715			(3,335		)	(2,620		)
Ending balance	$	398	$	(849	)	$	(437	)	$	(888	)

	For the Three Months Ended   March 31, 2017
Dollars in thousands	Gains and Losses on Other Post-Retirement Benefits		Gains and Losses on Cash Flow Hedges			Unrealized Gains (Losses) on Available-for-Sale Securities			Total
Beginning balance	$	—	$	(2,906	)	$	(356	)	$	(3,262	)
Other comprehensive income before reclassification	—		497			153			650
Amounts reclassified from accumulated other comprehensive income	—		—			37			37
Net current period other comprehensive income	—		497			190			687
Ending balance	$	—	$	(2,409	)	$	(166	)	$	(2,575	)