INDUSTRIAL DEVELOPMENT BONDS (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
INDUSTRIAL DEVELOPMENT BONDS
Industrial development bonds, average floating interest rate (as a percent)	1.00%	0.50%

Represents the percentage of average floating interest rate for industrial development bonds.

No definition available.

Name:	tr_IndustrialDevelopmentBondsNoncurrentFloatingInterestRate
Namespace Prefix:	tr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration