|
Income Taxes - Valuation Allowance (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Apr. 02, 2012
|
|
| Income Tax Disclosure [Abstract] | |||||
| Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount | $ 10.4us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities | $ 12.6us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities | $ 0us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities | ||
| Deferred Tax Assets, Capital Loss Carryforwards | 101.3us-gaap_DeferredTaxAssetsCapitalLossCarryforwards | ||||
| Decrease in Deferred Tax Assets Due to Subsidiary Conversion to Partnership | 16.1strza_DecreaseInDeferredTaxAssetsDueToSubsidiaryConversionToPartnership | ||||
| Decrease in Valuation Allowance Due to Subsidiary Conversion to Partnership | 16.1strza_DecreaseInValuationAllowanceDueToSubsidiaryConversionToPartnership | ||||
| Increase in Deferred Tax Assets Due to Difference in Book and Tax Basis for Subsidiary | $ 7.1strza_IncreaseInDeferredTaxAssetsDueToDifferenceInBookAndTaxBasisForSubsidiary | ||||
| X | ||||||||||
|
- Definition
Decrease in Deferred Tax Assets Due to Subsidiary Conversion to Partnership No definition available.
|
| X | ||||||||||
|
- Definition
Decrease in Valuation Allowance Due to Subsidiary Conversion to Partnership No definition available.
|
| X | ||||||||||
|
- Definition
Increase in Deferred Tax Assets Due to Difference in Book and Tax Basis for Subsidiary No definition available.
|
| X | ||||||||||
|
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|