Segment Information - Additional Information (Detail) |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
May 31, 2016
USD ($)
|
Feb. 29, 2016
USD ($)
|
Nov. 30, 2015
USD ($)
|
Aug. 31, 2015
USD ($)
|
May 31, 2015
USD ($)
|
Feb. 28, 2015
USD ($)
|
Nov. 30, 2014
USD ($)
|
Aug. 31, 2014
USD ($)
|
May 31, 2016
USD ($)
Segment
|
May 31, 2015
USD ($)
|
May 31, 2014
USD ($)
|
|
Segment Reporting Information [Line Items] | |||||||||||
Number of reportable segments | Segment | 2 | ||||||||||
Net Sales | $ 90,080,000 | $ 76,725,000 | $ 79,610,000 | $ 74,860,000 | $ 78,611,000 | $ 68,409,000 | $ 68,455,000 | $ 67,599,000 | $ 321,275,000 | $ 283,074,000 | $ 247,405,000 |
Foreign Operations | |||||||||||
Segment Reporting Information [Line Items] | |||||||||||
Net Sales | $ 107,680,000 | $ 103,867,000 | $ 96,111,000 | ||||||||
Net Sales, percentage | 33.50% | 36.70% | 38.80% | ||||||||
United States | |||||||||||
Segment Reporting Information [Line Items] | |||||||||||
Long lived assets percentage | 89.00% | 95.00% | 89.00% | 95.00% |