Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INTEREST INCOME:
Mortgage and other loans		$ 1,417,237	$ 1,472,020	$ 1,441,462
Securities and money market investments		165,002	202,849	250,122
Total interest income		1,582,239	1,674,869	1,691,584
INTEREST EXPENSE:
Interest-bearing checking and money market accounts		98,980	62,166	46,467
Savings accounts		28,447	31,982	50,776
Certificates of deposit		102,355	76,875	62,906
Borrowed funds		222,454	216,464	1,123,360
Total interest expense		452,236	387,487	1,283,509
Net interest income		1,130,003	1,287,382	408,075
Provision for (recovery of) losses		37,242	4,180	(15,004)
Net interest income after provision for (recovery of) loan losses		1,092,761	1,283,202	423,079
NON-INTEREST INCOME:
Fee income		31,759	32,665	34,058
Bank-owned life insurance		27,133	31,015	27,541
Mortgage banking income		19,337	27,281	54,113
Net gain on sales of loans		1,156	15,806	26,133
Net gain on sales of securities		29,924	3,347	4,054
FDIC indemnification expense		(18,961)	(6,155)	(9,336)
Gain on sale of covered loans and mortgage banking operations		82,026
Other		44,506	41,613	74,200
Total non-interest income		216,880	145,572	210,763
Operating expenses:
Compensation and benefits		360,985	351,436	342,624
Occupancy and equipment		98,963	98,543	102,435
General and administrative		181,270	188,130	170,541
Total operating expenses		641,218	638,109	615,600
Amortization of core deposit intangibles		208	2,391	5,344
Debt repositioning charge				141,209
Merger-related expenses			11,146	3,702
Total non-interest expense	[1]	641,426	651,646	765,855
Income (loss) before income taxes		668,215	777,128	(132,013)
Income tax expense (benefit)		202,014	281,727	(84,857)
Net (Loss) income		466,201	495,401	(47,156)
Preferred stock dividends		24,621
Net income (loss) available to common shareholders		$ 441,580	$ 495,401	$ (47,156)
Basic earnings (loss) per common share		$ 0.90	$ 1.01	$ (0.11)
Diluted earnings (loss) per common share		$ 0.90	$ 1.01	$ (0.11)
Net income (loss)		$ 466,201	$ 495,401	$ (47,156)
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on securities available for sale, net of tax of $29,740; $1,560; and $437, respectively		41,684	(2,207)	475
Change in the non-creditportion of OTTI losses recognized in other comprehensive income (loss), net of tax of $13; $49; and $44, respectively		20	77	69
Change in pension and post-retirement obligations, net of tax of $2,234; $2,924; and $1,161, respectively		1,585	4,015	(1,445)
Less: Reclassification adjustment for sales of available-for-sale securities, net of tax of $1,245; $1,127; and $306, respectively		(1,743)	(1,577)	(434)
Total other comprehensive income (loss), net of tax		41,546	308	(1,335)
Total comprehensive income (loss), net of tax		507,747	495,709	(48,491)
Non-Covered Loans
INTEREST EXPENSE:
Provision for (recovery of) losses		60,943	11,874	(3,334)
Covered Loans
INTEREST EXPENSE:
Provision for (recovery of) losses		$ (23,701)	$ (7,694)	$ (11,670)

[1] Includes both direct and indirect expenses.