Income Taxes (Details) (USD $)			3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2012 Internal Revenue Service (IRS)	Sep. 30, 2014 Internal Revenue Service (IRS)	Mar. 31, 2014 State Jurisdiction (Wisconsin)	Sep. 30, 2014 State Jurisdiction (Wisconsin)
Tax Audits [Abstract]
Year(s) no longer subject to audit as statute of limitations has expired				2008
Earliest year subject to examination				2009		2010
Year(s) under examination			2010 and 2011
Year of carryback claim under examination			2009
Potential Tax Adjustments				$ 10,000,000
Tax year(s) for which income tax examination has been completed					2009 through 2011
Unrecognized Tax Benefits [Abstract]
Unrecognized tax benefit — Permanent tax positions	100,000	100,000
Unrecognized tax benefit — Temporary tax positions	1,700,000	1,400,000
Total unrecognized tax benefit	1,800,000	1,500,000
NOL and tax credit carryforwards	(600,000)	(400,000)
Amounts accrued for penalties related to unrecognized tax benefits	$ 0	$ 0