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Severance and Other Charges (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 USD ($) position | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and other charges |  | $ 1,049 | $ 0 | $ 13,022 | $ 0
Accelerated stock-based compensation expense |  | 1,000 |  | 2,300 |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance, March 31, 2015 |  | 11,973 |  |  |
Increase in accrual |  | 27 |  |  |
Decrease in accrual |  | (1,345) |  |  |
Severance and other payments |  | (3,829) |  |  |
Ending balance, June 30, 2015 | $ 11,973 | 6,826 |  | 6,826 |
Minimum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected number of positions eliminated | position | 400 |  |  |  |
Maximum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected number of positions eliminated | position | 600 |  |  |  |
Restructuring Charges |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and other charges |  | 13,000 |  | 13,000 |
International Services |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance, March 31, 2015 |  | 372 |  |  |
Increase in accrual |  | 0 |  |  |
Decrease in accrual |  | 0 |  |  |
Severance and other payments |  | (187) |  |  |
Ending balance, June 30, 2015 | $ 372 | 185 |  | 185 |
U.S. Services |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance, March 31, 2015 |  | 10,743 |  |  |
Increase in accrual |  | 0 |  |  |
Decrease in accrual |  | (1,345) |  |  |
Severance and other payments |  | (2,757) |  |  |
Ending balance, June 30, 2015 | 10,743 | 6,641 |  | 6,641 |
Tubular Sales |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance, March 31, 2015 |  | 858 |  |  |
Increase in accrual |  | 27 |  |  |
Severance and other payments |  | (885) |  |  |
Ending balance, June 30, 2015 | $ 858 | $ 0 |  | $ 0 |

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