Derivative Financial Instruments, Effect on Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	$ 78	$ (756)	$ (328)	$ (1,668)
Fair Value Hedge Designation [Member] \| Interest Rate Swap [Member] \| Non-Interest Income-Other [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	(78)	(203)	(624)	(203)
Cash Flow Hedge Designation [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	78	(756)	(328)	(1,668)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Effective Portion)	(261)	142	(336)	291
Gain (Loss) Recognized in Income	0	0	0	0
Cash Flow Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	140	(489)	126	(1,274)
Cash Flow Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member] \| Interest Expense [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Effective Portion)	(180)	115	(233)	233
Gain (Loss) Recognized in Income	0	0	0	0
Cash Flow Hedge Designation [Member] \| Fixed Income Interest Rate [Member] \| Interest Rate Swap [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	(62)	(267)	(454)	(394)
Cash Flow Hedge Designation [Member] \| Fixed Income Interest Rate [Member] \| Interest Rate Swap [Member] \| Interest Expense [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Effective Portion)	(81)	27	(103)	58
Gain (Loss) Recognized in Income	0	0	0	0
No Hedge Designation [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	2,992	705	5,322	1,510
No Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member] \| Interest Expense [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	(7)	0	(42)	0
No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member] \| Mortgage Loan Gains [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	1,528	831	5,848	1,460
No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member] \| Mortgage Loan Gains [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	1,472	(125)	(482)	49
No Hedge Designation [Member] \| Purchased Options [Member] \| Interest Expense [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	3	(31)	(101)	55
No Hedge Designation [Member] \| Written Options [Member] \| Interest Expense [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	(4)	30	99	(54)
No Hedge Designation [Member] \| Fixed Income Interest Rate [Member] \| Interest Rate Swap [Member] \| Interest Income [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	315	(2,437)	(7,858)	(3,584)
No Hedge Designation [Member] \| Variable Income Interest Rate [Member] \| Interest Rate Swap [Member] \| Interest Income [Member]
Effect of derivative financial instruments on the condensed consolidated financial statements of operations [Abstract]
Gain (Loss) Recognized in Income	$ (315)	$ 2,437	$ 7,858	$ 3,584

No definition available.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959

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- Definition

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

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