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GE Royalty Obligation (Details)
6 Months Ended
Jun. 30, 2017
USD ($)
Tier 1 | Minimum [Member]  
Net Sales in Contract Year $ 0
Percentage of the Contract Year Net Sales owed to GE 7.00%
Tier 1 | Maximum [Member]  
Net Sales in Contract Year $ 50,000,000
Tier 2 | Minimum [Member]  
Net Sales in Contract Year $ 50,000,000
Percentage of the Contract Year Net Sales owed to GE 6.00%
Tier 2 | Maximum [Member]  
Net Sales in Contract Year $ 100,000,000
Tier 3 | Minimum [Member]  
Net Sales in Contract Year $ 100,000,000
Percentage of the Contract Year Net Sales owed to GE 5.00%