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