Long-Term Debt, Previous Credit Agreement (Details) $ in Millions, ¥ in Billions	12 Months Ended
	Dec. 31, 2019	Oct. 09, 2014 USD ($)	Oct. 09, 2014 JPY (¥)
Term Loan Facility [Member]
Long-term Debt [Abstract]
Original principal amount		$ 127.5
Term of loan	5 years
Japanese Yen Term Loan Facility [Member]
Long-term Debt [Abstract]
Original principal amount | ¥			¥ 6.6
Term of loan	5 years
Revolving Credit Facility [Member]
Long-term Debt [Abstract]
Borrowing capacity		$ 187.5
Term of loan	5 years