v2.4.1.9

Summary of Significant Accounting Policies Net Income Per Share (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | $ 104,342,000 us-gaap_ProfitLoss | $ 38,165,000 us-gaap_ProfitLoss | $ 271,804,000 us-gaap_ProfitLoss
NET INCOME | 13,790,000 us-gaap_NetIncomeLoss | 13,512,000 us-gaap_NetIncomeLoss | 78,901,000 us-gaap_NetIncomeLoss | (1,861,000)us-gaap_NetIncomeLoss | 14,536,000 us-gaap_NetIncomeLoss | 26,660,000 us-gaap_NetIncomeLoss | 9,238,000 us-gaap_NetIncomeLoss | (12,269,000)us-gaap_NetIncomeLoss | 101,420,000 us-gaap_NetIncomeLoss | 35,683,000 us-gaap_NetIncomeLoss | 271,804,000 us-gaap_NetIncomeLoss
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING — BASIC |  |  |  |  |  |  |  |  | 39,420 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 41,115 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 43,070 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Weighted Average Number Diluted Shares Outstanding Adjustment |  |  |  |  |  |  |  |  | 459 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 309 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 326 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING — DILUTED |  |  |  |  |  |  |  |  | 39,879 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 41,424 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 43,396 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
NET INCOME PER COMMON SHARE — BASIC | $ 0.37 us-gaap_EarningsPerShareBasic | $ 0.34 us-gaap_EarningsPerShareBasic | $ 1.95 us-gaap_EarningsPerShareBasic | $ (0.05)us-gaap_EarningsPerShareBasic | $ 0.35 us-gaap_EarningsPerShareBasic | $ 0.65 us-gaap_EarningsPerShareBasic | $ 0.22 us-gaap_EarningsPerShareBasic | $ (0.30)us-gaap_EarningsPerShareBasic | $ 2.65 us-gaap_EarningsPerShareBasic | $ 0.93 us-gaap_EarningsPerShareBasic | $ 6.31 us-gaap_EarningsPerShareBasic
Dilutive Securities, Effect on Basic Earnings Per Share |  |  |  |  |  |  |  |  | $ (0.03)us-gaap_DilutiveSecurities | $ 0.01 us-gaap_DilutiveSecurities | $ (0.05)us-gaap_DilutiveSecurities
NET INCOME PER COMMON SHARE — DILUTED | $ 0.36 us-gaap_EarningsPerShareDiluted | $ 0.34 us-gaap_EarningsPerShareDiluted | $ 1.93 us-gaap_EarningsPerShareDiluted | $ (0.05)us-gaap_EarningsPerShareDiluted | $ 0.35 us-gaap_EarningsPerShareDiluted | $ 0.64 us-gaap_EarningsPerShareDiluted | $ 0.22 us-gaap_EarningsPerShareDiluted | $ (0.30)us-gaap_EarningsPerShareDiluted | $ 2.62 us-gaap_EarningsPerShareDiluted | $ 0.92 us-gaap_EarningsPerShareDiluted | $ 6.26 us-gaap_EarningsPerShareDiluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  |  |  |  |  |  | 4,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 4,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 4,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding | 4,000 us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember |  |  |  | 4,000 us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember |  |  |  | 4,000 us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember | 4,000 us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember | 4,000 us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_WarrantMember
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  |  |  |  |  |  | 75 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_StatementClassOfStockAxis = us-gaap_EmployeeStockOptionMember | 79 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_StatementClassOfStockAxis = us-gaap_EmployeeStockOptionMember | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_StatementClassOfStockAxis = us-gaap_EmployeeStockOptionMember

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