Long-Term Obligations (Tables)

12 Months Ended

Jul. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Total debt consists of the following as of July 31:

	2017			2016
Euro-denominated notes payable in 2017 at a fixed rate of 3.71%	$	—		$	33,459
Euro-denominated notes payable in 2020 at a fixed rate of 4.24%	53,202			50,188
USD-denominated notes payable through 2017 at a fixed rate of 5.33%	—			16,335
USD-denominated borrowing on revolving loan agreement at a weighted average rate of 1.94% and 1.31% as of July 31, 2017 and 2016, respectively	16,998			112,000
EUR-denominated borrowing on revolving loan agreement at a weighted average rate of 0.75% as of July 31, 2017	34,336			—
CNY-denominated borrowing on China revolving loan agreement at a weighted average rate of 3.92% and 4.00% as of July 31, 2017 and 2016, respectively	2,228			4,928
USD-denominated borrowing on China revolving loan agreement at a weighted average rate of 2.63% as of July 31, 2017	1,000			—
	$	107,764		$	216,910
Less notes payable	(3,228		)	(4,928		)
Total long-term debt	$	104,536		$	211,982

Schedule of Maturities of Long-term Debt

Maturities on long-term debt are as follows:

Years Ending July 31,
2018	$	—
2019	—
2020	53,202
2021	51,334
2022	—
Total	$	104,536