Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred income tax assets:
Inventory basis difference	$ 1,825	$ 571
Accounts receivable reserve	251	310
Rental equipment and Property, plant and equipment	56	4
Stock based compensation	672	549
Pension liability	3,204	2,859
Employee benefit accrual	1,911	2,193
Product liability and warranty reserves	1,294	1,211
Foreign net operating loss	4,164	4,266
State net operating loss	148	286
Foreign tax credit	0	4,106
Other	(156)	216
Total deferred income tax assets	13,369	16,571
Less: Valuation allowance	(3,696)	(8,519)
Net deferred income tax assets	9,673	8,052
Deferred income tax liabilities:
Rental equipment and Property, plant and equipment	(9,928)	(7,477)
Intangible assets	(8,944)	(7,064)
Expenses not currently deductible for tax purposes	(749)	(887)
Total deferred income tax liabilities	(19,621)	(15,428)
Net deferred income taxes	$ (9,948)	$ (7,376)