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Note 13 - Commitments and Contingencies - Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Components of Total Lease Cost [Table Text Block] | The following tables provide additional information related to our leases, including: (i) the components of our total lease cost; (ii) the cash flows arising from our lease transactions; (iii) supplemental balance sheet information; (iv) the weighted-average remaining lease term; (v) the weighted-average discount rate used for our leases; and (vi) the remaining maturities of our lease liabilities, as of and for the periods indicated.
|  | Year Ended December 31,
($ in thousands) |  | 2020 |  | 2019
Operating lease cost |  | $ | 8,798 |  |  | $ | 9,332 |
Short-term lease cost |  | 13 |  |  | 140 |
Total lease cost |  | $ | 8,811 |  |  | $ | 9,472 |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases |  | $ | (9,595) |  |  | $ | (10,615) |
Operating Leases [Text Block] |
|  | December 31,
($ in thousands) |  | 2020 |  | 2019
Operating leases: |  |  |  |
Operating lease right-of-use assets (1) |  | $ | 32,985 |  |  | $ | 37,866 |
Operating lease liabilities (2) |  | 53,399 |  |  | 59,452 |
Weighted-average remaining lease term - operating leases (in years) |  | 9.3 years |  | 10.2 years
Weighted-average discount rate - operating leases |  | 6.72 | % |  | 6.80 | %
Remaining maturities of lease liabilities for future years is as follows: |  |  |  |
2021 |  | $ | 8,330 |  |  |
2022 |  | 10,040 |  |  |
2023 |  | 10,170 |  |  |
2024 |  | 9,904 |  |  |
2025 |  | 7,976 |  |  |
2026 and thereafter |  | 39,870 |  |  |
Total lease payments |  | 86,290 |  |  |
Less: Imputed interest |  | (32,891) |  |  |
Present value of lease liabilities (2) |  | $ | 53,399 |  |  |
(1)Classified in other assets in our consolidated balance sheets. See Note 9. (2)Classified in other liabilities in our consolidated balance sheets.

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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=121609121&loc=SL77918686-209980 + Details
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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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