Notes Payable and Long Term Debt (Narrative) (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Mar. 31, 2016 JPY (¥)	Feb. 09, 2017 USD ($)	Mar. 31, 2016 USD ($)	Oct. 15, 2015 CNY (¥)	Oct. 15, 2015 USD ($)
Second Amended and Restated Credit Agreement, as amended | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, effective percentage	2.52%
Second Amended and Restated Credit Agreement, as amended | Prime Rate [Member]
Debt Instrument [Line Items]
Interest rate, effective percentage	4.50%
Line of credit | Second Amended and Restated Credit Agreement, as amended | Subsequent event
Debt Instrument [Line Items]
Long-term line of credit			$ 0
Line of credit | Japan Credit Facility | Maximum
Debt Instrument [Line Items]
Repayments of lines of credit	$ 18,000,000
Unused borrowing capacity	38,000,000
Proceeds from lines of credit	$ 27,000,000
Current borrowing capacity		¥ 5,500,000,000		$ 47,000,000
Debt instrument, term		6 months
Line of credit | Japan Credit Facility | Tokyo Interbank Offered Rate (TIBOR)
Debt Instrument [Line Items]
Interest rate, effective percentage	0.43%
Basis spread on variable rate	0.40%
Line of credit | Revolving credit facility | Second Amended and Restated Credit Agreement, as amended
Debt Instrument [Line Items]
Repayments of lines of credit	$ 305,000,000
Long-term line of credit	0
Letters of credit amount outstanding	584,000
Unused borrowing capacity	389,000,000
Remaining borrowing capacity	400,000,000
Proceeds from lines of credit	50,000,000
Line of credit | Revolving credit facility | Second Amended and Restated Credit Agreement, as amended | Subsequent event
Debt Instrument [Line Items]
Remaining borrowing capacity			389,000,000
Line of credit | Revolving credit facility | Second Amended China Credit Facility
Debt Instrument [Line Items]
Repayments of lines of credit	22,000,000
Remaining borrowing capacity	22,000,000
Additional available credit					¥ 300,000,000	$ 43,000,000
Capacity available for fully owned subsidiary					¥ 50,000,000	$ 7,000,000
Proceeds from lines of credit	$ 21,000,000
Line of credit | Revolving credit facility | Second Amended China Credit Facility | Subsequent event
Debt Instrument [Line Items]
Long-term line of credit			21,000,000
Unused borrowing capacity			22,000,000
Line of credit | Revolving credit facility | Second Amended China Credit Facility, as amended
Debt Instrument [Line Items]
Interest rate, effective percentage	4.35%
Line of credit | Revolving credit facility | Japan Credit Facility
Debt Instrument [Line Items]
Current line of credit	$ 9,000,000
Line of credit | Revolving credit facility | Japan Credit Facility | Subsequent event
Debt Instrument [Line Items]
Remaining borrowing capacity			$ 47,000,000