Description of Business and Summary of Significant Accounting Policies (Concentration of Credit Risk) (Details) - Customer Concentration Risk - customer	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Sales [Member]
Concentration Risk [Line Items]
Number of customers over 10% or Sales and AR	1	0	1
Sales [Member] | ABB Ltd [Member]
Concentration Risk [Line Items]
Major customer, percentage of sales	12.00%
Sales [Member] | Shenzhen Xinlikang
Concentration Risk [Line Items]
Major customer, percentage of sales			19.00%
Accounts Receivable
Concentration Risk [Line Items]
Number of customers over 10% or Sales and AR	2	0
Accounts Receivable | Continental Automotive [Member]
Concentration Risk [Line Items]
Major customer, percentage of sales	11.00%
Accounts Receivable | ABB Ltd [Member]
Concentration Risk [Line Items]
Major customer, percentage of sales	10.00%