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Inventories	9 Months Ended
Inventories	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories Included in inventories at September 30, 2017, and December 31, 2016, are $1.4 million and $0.7 million, respectively, of finished goods and $0.7 million and $0.4 million, respectively, of components.