Long-Term Obligations (Tables)

12 Months Ended

Jul. 31, 2016

Debt Disclosure [Abstract]

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

Total debt consists of the following as of July 31, 2016:

	2016			2015
Euro-denominated notes payable in 2017 at a fixed rate of 3.71%	$	33,459		$	32,960
Euro-denominated notes payable in 2020 at a fixed rate of 4.24%	50,188			49,442
USD-denominated notes payable through 2016 at a fixed rate of 5.30%	—			26,143
USD-denominated notes payable through 2017 at a fixed rate of 5.33%	16,335			32,743
USD-denominated borrowing on revolving loan agreement at a weighted average rate of 1.3136% and 1.2740% as of July 31, 2016 and 2015, respectively	112,000			102,000
USD-denominated borrowing on revolving loan agreement at a weighted average rate of 1.9501% as of July 31, 2015.	—			1,836
CNY-denominated borrowing on revolving loan agreement at a weighted average rate of 4.0042% and 4.6634% as of July 31, 2016 and 2015, respectively (USD equivalent)	4,928			8,575
	$	216,910		$	253,699
Less notes payable	(4,928		)	(10,411		)
Total long-term debt	$	211,982		$	243,288

Schedule of Maturities of Long-term Debt

Maturities on long-term debt are as follows:

Years Ending July 31,
2017	$	49,794
2018	—
2019	—
2020	50,188
2021	112,000
Total	$	211,982