Discontinued Operations (Details) (USD $)	3 Months Ended	6 Months Ended	1 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Nov. 30, 2012 American Augers, Inc. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of Augers			$ 42,940,000
Previously reported sales excluded from reported sales	15,600,000	30,270,000
Post closing adjustment		$ 499,000