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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2018
Income Taxes |
Schedule of reconciliation of unrecognized tax benefits |
|  | Six Months Ended June 30,
|  | 2018 |  | 2017
|  |  |  |  | Interest |  |  |  |  |  |  |  | Interest |  |  |
|  |  |  |  | and |  |  |  |  |  |  |  | and |  |  |
(dollars in thousands) |  | Tax |  | Penalties |  | Total |  | Tax |  | Penalties |  | Total
Balance at January 1, |  | $ | 130,619 |  | $ | 10,660 |  | $ | 141,279 |  | $ | 127,085 |  | $ | 9,965 |  | $ | 137,050
Additions for current year tax positions |  |  | 819 |  |  | — |  |  | 819 |  |  | 1,478 |  |  | — |  |  | 1,478
Additions for Reorganization Transactions |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 226 |  |  | 226
Additions for prior years' tax positions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrual of interest and penalties |  |  | — |  |  | 509 |  |  | 509 |  |  | — |  |  | 209 |  |  | 209
Reductions for prior years' tax positions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration of statute of limitations |  |  | (140) |  |  | (63) |  |  | (203) |  |  | (254) |  |  | (101) |  |  | (355)
Other |  |  | (515) |  |  | — |  |  | (515) |  |  | — |  |  | — |  |  | —
Balance at June 30, |  | $ | 130,783 |  | $ | 11,106 |  | $ | 141,889 |  | $ | 128,309 |  | $ | 10,299 |  | $ | 138,608

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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=96868398&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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