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Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Leases [Abstract] |
Lease, Cost [Table Text Block] | ​
​ | ​ | ​ | ​
​ | ​ | At or for the
​ | ​ | twelve months ended
(Dollars in thousands) | ​ | December 31, 2019
​ | ​ | ​ | ​
Operating lease ROU assets | ​ | $ | 41,254
​ | ​ | ​ | ​
Operating lease liabilities | ​ | $ | 49,367
​ | ​ | ​ | ​
Lease Cost | ​ | ​ | ​
Operating lease cost | ​ | $ | 7,575
Short-term lease cost | ​ | ​ | 136
Variable lease cost | ​ | ​ | 1,020
Total lease cost | ​ | $ | 8,731
​ | ​ | ​ | ​
​ | ​ | ​ | ​
Other information | ​ | ​ | ​
Cash paid for amounts included in the measurement of lease liabilities | ​ | ​ | ​
Operating cash flows from operating leases | ​ | $ | 8,051
Right-of-use assets obtained in exchange for new operating lease liabilities | ​ | $ | 1,576
Weighted-average remaining lease term-operating leases | ​ | ​ | 7.5 years
Weighted average discount rate-operating leases | ​ | ​ | 3.8%
Lessee, Operating Lease, Liability, Maturity [Table Text Block] | ​
​ | ​ | ​ | ​
​ | ​ | Minimum Rental
​ | ​ | (In thousands)
Years ended December 31: | ​ | ​ | ​
2020 | ​ | $ | 8,113
2021 | ​ | ​ | 7,675
2022 | ​ | ​ | 7,260
2023 | ​ | ​ | 7,397
2024 | ​ | ​ | 7,425
Thereafter | ​ | ​ | 19,148
Total minimum payments required | ​ | ​ | 57,018
Less: implied interest | ​ | ​ | 7,651
Total lease obligations | ​ | $ | 49,367
Schedule of Minimum annual rental payments for 2018 Bank facilities due under non-cancelable leases | ​
​ | ​ | ​ | ​
​ | ​ | Minimum Rental
​ | ​ | (In thousands)
Years ended December 31: | ​ | ​ | ​
2019 | ​ | $ | 7,605
2020 | ​ | ​ | 7,977
2021 | ​ | ​ | 7,214
2022 | ​ | ​ | 6,822
2023 | ​ | ​ | 6,961
Thereafter | ​ | ​ | 23,655
Total minimum payments required | ​ | $ | 60,234

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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