Income Taxes - Narrative (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Valuation Allowance, Deferred Tax Asset, Change in Amount			$ 138,000	$ 864,000	$ 361,000
U.S federal net operating loss carryforwards	52,000,000	56,000,000	52,000,000	56,000,000
Net Operating Loss Carryforwards Utilization			13 years
Net Operating Loss Carryforwards Used In The Current Period			3,800,000	8,600,000
non-U.S. net operating loss carryforwards	125,000	150,000	125,000	150,000
Tax Credit Research And Development			600,000
Unrecognized Tax Benefits Gross Including Interest and Penalties	2,300,000	2,900,000	2,300,000	2,900,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1,700,000	2,200,000	1,700,000	2,200,000
Deferred Tax Asset, Reduction in Valuation Allowance, Noncurrent			236,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		139,000		139,000	161,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense			22,000	215,000		12,000
Settlements with taxing authorities			0	0	(507,000)
Estimated change in unrecognized tax benefit in next twelve months, lower bound	200,000		200,000
Estimated change in unrecognized tax benefit in next twelve months, upper bound	$ 600,000		$ 600,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%			35.00%