Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Statutory federal income tax rate (in Percent)	35.00%	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent	(8.10%)	(4.93%)	(6.91%)	(4.67%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	6.00%	5.41%	4.80%	4.74%
Effective Income Tax Rate Reconciliation Uncertain Tax Positions Reversal	0.00%	(8.40%)	0.00%	(2.92%)
Effective Income Tax Rate Reconciliation, Discrete Tax Benefit	0.00%	(70.43%)	0.00%	(23.33%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	(1.25%)	(2.72%)	0.35%	(1.26%)
Income Tax Expense (Benefit)	$ 23,550	$ (32,267)	$ 80,896	$ 15,984
Effective Income Tax Rate Reconciliation, Percent	31.65%	(46.07%)	33.24%	7.56%

Effective Income Tax Rate Reconciliation, Discrete Tax Benefit - increase in basis of certain assets

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Effective Income Tax Rate Reconciliation - Reversal of Uncertain Tax Positions due to lapse in statute of limitations

+ References

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6515339

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