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Income Taxes - Additional Information (Details) (USD $) | 3 Months Ended |  | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2013 Foreign Tax Authority | Dec. 31, 2014 Forecast Foreign Tax Authority
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Effective income tax rate | 15.60% | 30.50% |  |  |
Effective income tax rate, discontinued operations | 29.10% | 36.80% |  |  |
Federal statutory income tax rate | 35.00% |  |  |  |
Deferred tax assets | $ 67,700,000 |  | $ 77,000,000 |  |
Valuation allowance |  |  | 12,400,000 | 10,900,000 |
Release of valuation allowance |  |  |  |  | 3,600,000
Liability for Uncertain Tax Positions, Continuing Operations, Excluding Interest and Penalties | 1,100,000 |  | 736,000 |  |
Accrued Interest And Penalties For Continued Operations | 56,000 |  | 20,000 |  |
Disposal Group, Including Discontinued Operation, Accrued Income Taxes Payable | 636,000 |  | 636,000 |  |
Accrued Interest and Penalties for Discontinued Operations | 458,000 |  | 450,000 |  |
Liability for Uncertain Tax Positions, Noncurrent | $ 2,200,000 |  | $ 1,800,000 |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition The amount of the change in the period in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 + Details
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