Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ (168,047)	$ (98,575)	$ (26,201)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	(29,009)	(15,689)	(6,014)
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	8,274	4,472	3,979
Income Tax Reconciliation Change In Cash Surrender Value Of Life Insurance	884	739	407
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	2,441	3,567	2,480
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount	(1,005)	(6,792)	(4,730)
Nondeductible acquisition-related expense	(876)	(2,994)	(1,196)
Income Tax Reconciliation Acquisition Related Securities Gain Loss	0	0	1,828
Deferred Tax Assets, Tax Deferred Expense	5,529	(157)	0
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	2,917	3,520	0
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(1,625)	(3,982)	(2,820)
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations, Extraordinary Items	$ 180,517	$ 115,891	$ 32,267