Accumulated Other Comprehensive Income - ("AOCI") (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated other comprehensive income (loss), Beginning Balance	$ 53,399	$ 72,609	$ 46,921	$ 93,267
OCI before reclassifications	19,157	(21,996)	25,635	(42,654)
Amounts reclassified from AOCI	0	0	0	0
Net current period OCI	19,157	(21,996)	25,635	(42,654)
Accumulated other comprehensive income (loss), Ending Balance	72,556	50,613	72,556	50,613
Interest rate Swaps [Member]
Accumulated other comprehensive income (loss), Beginning Balance	(23,563)	(26,579)	(19,368)	(25,803)
OCI before reclassifications	(6,975)	2,849	(11,170)	2,073
Amounts reclassified from AOCI	0	0	0	0
Net current period OCI	(6,975)	2,849	(11,170)	2,073
Accumulated other comprehensive income (loss), Ending Balance	(30,538)	(23,730)	(30,538)	(23,730)
Securities available for sale [Member]
Accumulated other comprehensive income (loss), Beginning Balance	89,542	112,442	78,448	133,774
OCI before reclassifications	28,019	(25,000)	39,113	(46,332)
Amounts reclassified from AOCI	0	0	0	0
Net current period OCI	28,019	(25,000)	39,113	(46,332)
Accumulated other comprehensive income (loss), Ending Balance	117,561	87,442	117,561	87,442
Pro Rata Share Of Non Consolidated Subsidiaries Oci [Member]
Accumulated other comprehensive income (loss), Beginning Balance	(9,313)	(8,835)	(9,319)	(8,992)
OCI before reclassifications	(628)	(1,191)	(622)	(1,034)
Amounts reclassified from AOCI	0	0	0	0
Net current period OCI	(628)	(1,191)	(622)	(1,034)
Accumulated other comprehensive income (loss), Ending Balance	(9,941)	(10,026)	(9,941)	(10,026)
Other [Member]
Accumulated other comprehensive income (loss), Beginning Balance	(3,267)	(4,419)	(2,840)	(5,712)
OCI before reclassifications	(1,259)	1,346	(1,686)	2,639
Amounts reclassified from AOCI	0	0	0	0
Net current period OCI	(1,259)	1,346	(1,686)	2,639
Accumulated other comprehensive income (loss), Ending Balance	$ (4,526)	$ (3,073)	$ (4,526)	$ (3,073)