Fair Value Additional (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Value of Financial Instruments
Term Loan B, Carrying Value		$ 415,454	$ 387,685
Senior Loans | Subsidiary, Libbey Glass
Value of Financial Instruments
Term Loan B, Carrying Value	[1]	383,500	384,600
Level 2 | Senior Loans | Subsidiary, Libbey Glass
Value of Financial Instruments
Term Loan B, Fair Value		$ 378,227	$ 370,178

[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.