Shareholders' Equity (AOCI by component) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Accumulated other comprehensive (loss) income, Beginning Balance	$ 46,921
Net current period OCI	72,051
Accumulated other comprehensive (loss) income, Ending Balance	118,972
Interest rate Swap
Accumulated other comprehensive (loss) income, Beginning Balance	(19,368)
Net current period OCI	27,434
Accumulated other comprehensive (loss) income, Ending Balance	8,066
Securities available for sale
Accumulated other comprehensive (loss) income, Beginning Balance	78,448
Net current period OCI	52,057
Accumulated other comprehensive (loss) income, Ending Balance	130,505
Pro-rata share of non consolidated subsidiaries' OCI
Accumulated other comprehensive (loss) income, Beginning Balance	(9,319)
Net current period OCI	(2,739)
Accumulated other comprehensive (loss) income, Ending Balance	(12,058)
Other
Accumulated other comprehensive (loss) income, Beginning Balance	(2,840)
Net current period OCI	(4,701)
Accumulated other comprehensive (loss) income, Ending Balance	$ (7,541)