Quarterly report pursuant to Section 13 or 15(d)

Income Taxes Income Taxes - Unrecognized tax benefits (Details)

Income Taxes Income Taxes - Unrecognized tax benefits (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]  
Balance, beginning of period $ 3,700us-gaap_UnrecognizedTaxBenefits
Additions for prior year tax positions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Settlements with tax authorities 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Reductions of prior year tax positions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Balance, end of period $ 3,700us-gaap_UnrecognizedTaxBenefits