|
Income Taxes - Additional Information (Detail) (USD $)
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Decrease in valuation allowance |
$ 2,000,000 |
$ 1,700,000 |
|
| Depreciation and amortization |
134,053,000 |
113,017,000 |
112,136,000 |
| Total income tax expense (benefit) |
25,608,000 |
33,879,000 |
(14,767,000) |
| Non-cash pretax impairment charge relating to AADU rigs in Alaska |
0 |
0 |
170,000,000 |
| Increased valuation allowance |
|
|
2,500,000 |
| Liability for unrecognized tax benefits |
12,209,000 |
10,030,000 |
|
| Unrecognized tax benefits |
5,400,000 |
|
|
| Accrued interest and penalties related to uncertain tax positions |
7,900,000 |
7,000,000 |
|
| Increase of interest |
900,000 |
|
|
|
Internal Revenue Service (IRS) [Member]
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Total income tax expense (benefit) |
|
1,700,000 |
|
|
Foreign Tax Authority [Member]
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Reclassifications |
|
1,300,000 |
5,600,000 |
|
Federal And State Jurisdiction [Member]
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Total income tax expense (benefit) |
|
|
(60,900,000) |
|
Mexico [Member] | Foreign Tax Authority [Member]
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Total income tax expense (benefit) |
(3,300,000) |
|
|
|
ALASKA [Member]
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
| Depreciation and amortization |
$ 20,900,000 |
$ 7,700,000 |
|