Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Name:	us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Stockholders' Equity - Stock Repurchases, Cash Dividend (Details) - USD ($)	12 Months Ended			24 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2017
Cash Dividends
Cash dividends declared (in dollars per share)	$ 0.45	$ 0.40	$ 0.30
Stock Repurchases
Stock repurchased		$ 1,474,000	$ 3,354,000
Stock Repurchases
Stock Repurchases
Stock repurchase program, authorized amount			$ 5,000,000
Stock repurchased (in shares)		47,173		152,173
Stock repurchased		$ 1,474,000		$ 4,828,000