A reconciliation of the total amount of unrecognized tax benefits is as follows:
| 2013 | 2012 | 2011 | ||||||||||
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Balance, beginning of period |
$ | 40,075 | $ | 76,818 | $ | 81,815 | ||||||
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Gross increases: tax positions taken in prior periods |
515 | 8,380 | — | |||||||||
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Gross decreases: tax positions taken in prior periods |
(13,042 | ) | (8,943 | ) | (5,056 | ) | ||||||
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Gross increases: tax positions taken in current year |
2,457 | 3,114 | 2,829 | |||||||||
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Gross decreases: tax positions taken in current year |
— | — | — | |||||||||
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Gross decreases: settlement of tax examinations |
— | (39,294 | ) | (2,770 | ) | |||||||
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Balance, end of period |
$ | 30,005 | $ | 40,075 | $ | 76,818 | ||||||
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