Securities Available for Sale - Aggregate Unrealized Losses and Fair Value (Details) (USD $)
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3 Months Ended | 3 Months Ended | 12 Months Ended | |||||||||||||||||
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Mar. 31, 2014
security
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Mar. 31, 2013
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Dec. 31, 2013
security
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Mar. 31, 2014
GSE collateralized mortgage obligations
security
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Dec. 31, 2013
GSE collateralized mortgage obligations
security
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Mar. 31, 2014
GSE mortgage-backed securities
security
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Dec. 31, 2013
GSE mortgage-backed securities
security
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Mar. 31, 2014
Trust preferred securities
security
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Dec. 31, 2013
Trust preferred securities
security
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Mar. 31, 2014
Municipal bonds
security
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Mar. 31, 2014
Mutual funds - GSE mortgage related securities
security
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Dec. 31, 2013
Mutual funds - GSE mortgage related securities
security
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Mar. 31, 2014
Credit concentration risk
Stockholders' equity
Non-US Government and agency securities
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Dec. 31, 2013
Credit concentration risk
Stockholders' equity
Non-US Government and agency securities
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Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions [Abstract] | ||||||||||||||||||||
Number of Securities, Less than 12 months | 31 | 52 | 10 | [1] | 21 | [1] | 19 | [1] | 29 | [1] | 0 | 1 | 1 | 1 | 1 | |||||
Number of Securities, 12 months or longer | 20 | 11 | 9 | [1] | 3 | [1] | 10 | [1] | 7 | [1] | 1 | 1 | 0 | 0 | 0 | |||||
Number of Securities, Total | 51 | 63 | 19 | [1] | 24 | [1] | 29 | [1] | 36 | [1] | 1 | 2 | 1 | 1 | 1 | |||||
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] | ||||||||||||||||||||
Fair Value - Less than 12 months | $ 264,036,000 | $ 416,122,000 | $ 103,382,000 | [1] | $ 198,713,000 | [1] | $ 146,427,000 | [1] | $ 203,276,000 | [1] | $ 0 | $ 1,112,000 | $ 1,132,000 | $ 13,095,000 | $ 13,021,000 | |||||
Fair Value - 12 months or longer | 139,479,000 | 31,871,000 | 94,998,000 | [1] | 13,381,000 | [1] | 40,681,000 | [1] | 14,793,000 | [1] | 3,800,000 | 3,697,000 | 0 | 0 | 0 | |||||
Fair Value - Total | 403,515,000 | 447,993,000 | 198,380,000 | [1] | 212,094,000 | [1] | 187,108,000 | [1] | 218,069,000 | [1] | 3,800,000 | 4,809,000 | 1,132,000 | 13,095,000 | 13,021,000 | |||||
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] | ||||||||||||||||||||
Gross Unrealized Losses - Less than 12 months | (5,347,000) | (20,227,000) | (2,408,000) | [1] | (12,460,000) | [1] | (2,565,000) | [1] | (7,293,000) | [1] | 0 | (70,000) | (44,000) | (330,000) | (404,000) | |||||
Gross Unrealized Losses - 12 months or longer | (7,415,000) | (2,466,000) | (3,710,000) | [1] | (1,151,000) | [1] | (2,985,000) | [1] | (496,000) | [1] | (720,000) | (819,000) | 0 | 0 | 0 | |||||
Gross Unrealized Losses - Total | (12,762,000) | (22,693,000) | (6,118,000) | [1] | (13,611,000) | [1] | (5,550,000) | [1] | (7,789,000) | [1] | (720,000) | (889,000) | (44,000) | (330,000) | (404,000) | |||||
Maximum exposure to any single issuer | 10.00% | 10.00% | ||||||||||||||||||
Gross unrealized gains (losses) included in accumulated other comprehensive income during the period | 11,100,000 | (3,700,000) | ||||||||||||||||||
Reclassification out of accumulated other comprehensive income as a result of securities being sold | $ 0 | $ 54,000 | ||||||||||||||||||
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