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Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | $ 75,646 | $ 70,043
Charged-offs | (4,307) | (3,815)
Recoveries | 2,636 | 2,018
Provision for loan and lease losses | 5,852 | 2,775
Ending balance | 79,827 | 71,021
Specific Reserve | 5,857 | 94
General Allocation | 73,970 | 70,927
Secured Loans [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 29,341 | 36,050
Charged-offs | (2,414) | (1,109)
Recoveries | 553 | 297
Provision for loan and lease losses | 9,851 | 434
Ending balance | 37,331 | 35,672
Specific Reserve | 5,657 | 0
General Allocation | 31,674 | 35,672
Unsecured Loans [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 2,000 | 960
Charged-offs | (63) | (18)
Recoveries | 249 | 68
Provision for loan and lease losses | 409 | 178
Ending balance | 2,595 | 1,188
Specific Reserve | 2 | 0
General Allocation | 2,593 | 1,188
One-to-Four Family Residential [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 701 | 599
Charged-offs | 0 | (307)
Recoveries | 172 | 117
Provision for loan and lease losses | (315) | 236
Ending balance | 558 | 645
Specific Reserve | 22 | 11
General Allocation | 536 | 634
Commercial Land [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 4,265 | 1,797
Charged-offs | 0 | 0
Recoveries | 6 | 0
Provision for loan and lease losses | (526) | 491
Ending balance | 3,745 | 2,288
Specific Reserve | 0 | 0
General Allocation | 3,745 | 2,288
Income Property Multifamily [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 5,672 | 7,342
Charged-offs | (223) | 0
Recoveries | 141 | 35
Provision for loan and lease losses | (888) | (574)
Ending balance | 4,702 | 6,803
Specific Reserve | 0 | 26
General Allocation | 4,702 | 6,777
Owner Occupied [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 5,459 | 6,439
Charged-offs | 0 | 0
Recoveries | 12 | 43
Provision for loan and lease losses | (722) | 52
Ending balance | 4,749 | 6,534
Specific Reserve | 5 | 0
General Allocation | 4,744 | 6,534
Land And Acquisition [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 963 | 316
Charged-offs | 0 | (14)
Recoveries | 16 | 20
Provision for loan and lease losses | (67) | 187
Ending balance | 912 | 509
Specific Reserve | 0 | 0
General Allocation | 912 | 509
Residential Construction [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 3,709 | 669
Charged-offs | 0 | 0
Recoveries | 3 | 9
Provision for loan and lease losses | 924 | 431
Ending balance | 4,636 | 1,109
Specific Reserve | 0 | 0
General Allocation | 4,636 | 1,109
Income Property Multifamily Construction [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 7,053 | 404
Charged-offs | 0 | 0
Recoveries | 0 | 0
Provision for loan and lease losses | 421 | 378
Ending balance | 7,474 | 782
Specific Reserve | 0 | 0
General Allocation | 7,474 | 782
Owner Occupied Construction [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 4,413 | 1,192
Charged-offs | 0 | 0
Recoveries | 0 | 0
Provision for loan and lease losses | (2,490) | 576
Ending balance | 1,923 | 1,768
Specific Reserve | 0 | 0
General Allocation | 1,923 | 1,768
Consumer Portfolio Segment [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 5,163 | 3,534
Charged-offs | (264) | (428)
Recoveries | 260 | 285
Provision for loan and lease losses | 57 | (31)
Ending balance | 5,216 | 3,360
Specific Reserve | 171 | 57
General Allocation | 5,045 | 3,303
Purchased Credit Impaired Loans [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 6,907 | 10,515
Charged-offs | (1,343) | (1,939)
Recoveries | 1,224 | 1,144
Provision for loan and lease losses | (1,123) | (325)
Ending balance | 5,665 | 9,395
Specific Reserve | 0 | 0
General Allocation | 5,665 | 9,395
Unallocated Financing Receivables [Member] |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Beginning balance | 0 | 226
Charged-offs | 0 | 0
Recoveries | 0 | 0
Provision for loan and lease losses | 321 | 742
Ending balance | 321 | 968
Specific Reserve | 0 | 0
General Allocation | $ 321 | $ 968

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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