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Recently Issued Accounting Standards (Tables) | 6 Months Ended
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Jun. 30, 2019
Accounting Changes and Error Corrections [Abstract] |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] | The cumulative effect of changes made to our opening Consolidated Balance Sheet on January 1, 2019 for the adoption of Topic 842 is as follows (in thousands):
| December 31, 2018 |  | Effect of Adoption of Topic 842 |  | January 1, 2019
Assets |  |  |  |  |
Prepaid expenses | $ | 1,456 |  |  | $ | (148 | ) |  | $ | 1,308 |
Operating lease right-of-use assets | — |  |  | 16,470 |  |  | 16,470 |
|  |  | $ | 16,322 |  |  |
Liabilities |  |  |  |  |
Accrued and other liabilities | $ | 22,644 |  |  | $ | (274 | ) |  | $ | 22,370 |
Other long-term liabilities | 3,133 |  |  | (692 | ) |  | 2,441 |
Current portion of operating lease obligations | — |  |  | 2,633 |  |  | 2,633 |
Obligations under operating leases, net of current portion | — |  |  | 14,655 |  |  | 14,655 |
|  |  | $ | 16,322 |  |  |

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