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Income Taxes (Details 2) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Operating loss carryforwards |  |
Valuation allowance against deferred tax assets related to buildings | $ 17.3 | $ 18.2
UK |  |
Operating loss carryforwards |  |
Amount of tax credit carryforwards not subject to expiration | 5.6 |
Net operating loss carryforwards not subject to expiration | 0.2 |
Valuation allowance against deferred tax assets related to buildings | 7.8 |
German |  |
Operating loss carryforwards |  |
Net operating loss carryforwards not subject to expiration | 18.5 |
Valuation allowance against net operating loss carryforwards | 7.2 |
Australia |  |
Operating loss carryforwards |  |
Net operating loss carryforwards not subject to expiration | 21.5 |
New Zealand |  |
Operating loss carryforwards |  |
Net operating loss carryforwards not subject to expiration | 1.7 |
Italian |  |
Operating loss carryforwards |  |
Net operating loss carryforwards not subject to expiration | 0.1 |
State |  |
Operating loss carryforwards |  |
Net operating loss carryforwards that expire at various dates | 63.4 |
Net operating loss carryforwards utilized | 20.3 |
Valuation allowance against net operating loss carryforwards | 2.0 |
Valuation allowance against state credit carryforwards | 0.3 |
Federal and state |  |
Operating loss carryforwards |  |
Amount of tax credit carryforwards not subject to expiration | $ 2.5 |

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