|
Income Taxes (Components of Income Tax) (Details) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Income Taxes [Line Items] | |||
| Income from U.S. operations before income taxes | $ 319,800,000 | $ 158,700,000 | $ 137,300,000 |
| Current tax expense | 147,739,000 | 107,241,000 | 52,402,000 |
| Deferred tax expense | (44,336,000) | (37,925,000) | (5,894,000) |
| Total income tax expense (benefit) | 103,403,000 | 69,316,000 | 46,508,000 |
|
United States
|
|||
| Income Taxes [Line Items] | |||
| Current tax expense | 146,484,000 | 94,834,000 | 52,297,000 |
| Deferred tax expense | (44,180,000) | (38,441,000) | (6,066,000) |
|
Canada
|
|||
| Income Taxes [Line Items] | |||
| Income from Canadian operations before income taxes | 82,300,000 | 31,600,000 | 1,000,000 |
| Current tax expense | 1,255,000 | 12,407,000 | 105,000 |
| Deferred tax expense | $ (156,000) | $ 516,000 | $ 172,000 |