Financing Arrangements (Details Textual) $ in Thousands	Mar. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
Capital Leased Assets, Number of Units	700
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation	$ 500
Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate on capital lease	4.50%