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Debt and Credit Arrangements (Details Textual)
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6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | ||||||
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Mar. 31, 2014
USD ($)
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Jun. 30, 2013
Revolving credit facility [Member]
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Mar. 31, 2014
Revolving credit facility [Member]
USD ($)
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Mar. 31, 2013
Grass acquisition [Member]
Revolving credit facility [Member]
USD ($)
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Mar. 31, 2014
Term loan [Member]
USD ($)
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Dec. 31, 2013
Term loan [Member]
USD ($)
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Jun. 30, 2013
Term loan [Member]
USD ($)
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Mar. 31, 2013
Term loan [Member]
USD ($)
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Mar. 31, 2014
Term loan [Member]
Interest at LIBOR plus [Member]
USD ($)
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Mar. 31, 2014
Term loan [Member]
Interest at Cost of Funds Plus [Member]
CAD
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| Debt and Credit Arrangements (Textual) [Abstract] | ||||||||||
| Revolving credit facility with Wells Fargo Bank | $ 75,000,000 | $ 25,000,000 | $ 50,000,000 | |||||||
| Borrowing amount under credit facility | 22,000,000 | |||||||||
| Extended term of revolving line of credit | 5 years | |||||||||
| Amount of short term credit facility converted in to a term loan | 31,200,000 | |||||||||
| Term loan outstanding | 50,000,000 | 18,800,000 | ||||||||
| Principal amount of debt | 50,000,000 | 2,900,000 | ||||||||
| Basis spread interest rate | 1.75% | 2.50% | ||||||||
| Maturity date of debt instrument | Jun. 30, 2017 | Sep. 30, 2018 | Sep. 15, 2014 | |||||||
| Periodic principal amount | 5,000,000 | 7,500,000 | 2,500,000 | 16,000 | ||||||
| Final payment, collateralized by a first lien on land and building | 404,000 | |||||||||
| Term Loan expiration period | 5 years | |||||||||