Borrowings (Debt Schedule) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total borrowings		$ 415,454	$ 387,685
Less - unamortized discount and finance fees		3,055	3,295
Total borrowings -- net		412,399	384,390
Less -- long term debt due within one year		6,177	7,485
Total long-term portion of borrowings -- net		406,222	376,905
Subsidiaries, Libbey Glass and Libbey Europe | Asset-backed Loan Facility | Line of Credit
Debt Instrument [Line Items]
Total borrowings		30,177	0
Subsidiary, Libbey Glass | Senior Loans
Debt Instrument [Line Items]
Total borrowings	[1]	$ 383,500	384,600
Interest rate		4.72%
Subsidiary, Libbey Portugal | AICEP Loan | Loans Payable
Debt Instrument [Line Items]
Total borrowings		$ 1,777	$ 3,085
Interest rate		0.00%

[1] We have entered into an interest rate swap that effectively fixes a series of our future interest payments on a portion of the Term Loan B debt. See interest rate swap in note 8 for additional details. The Term Loan B floating interest rate was 4.72 percent at March 31, 2018.