Consolidated Statements of Operations (USD $)	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2013
Sales	$ 36,169,811	$ 34,226,553
Cost of goods sold	27,445,242	25,860,107
Gross profit	8,724,569	8,366,446
Expenses:
Engineering	482,057	514,086
Selling	2,372,299	2,155,640
General and administrative	4,205,375	3,879,580
Total expenses	7,059,731	6,549,306
Income from operations	1,664,838	1,817,140
Other income (expense):
Interest expense	(351,899)	(296,640)
Other	(10,434)	685,344
Total other income (expense)	(362,333)	388,704
Income before income taxes	1,302,505	2,205,844
Income tax expense	367,258	654,468
Net income	$ 935,247	$ 1,551,376
Net income per share:
Basic net income per share (in dollars per share)	$ 0.23	$ 0.38
Diluted net income per share (in dollars per share)	$ 0.23	$ 0.38
Weighted average outstanding shares used to compute basic net income per share (in shares)	4,047,796	4,039,530
Weighted average outstanding shares used to compute diluted net income per share (in shares)	4,052,703	4,049,791