XML 14 R54.htm IDEA: XBRL DOCUMENT

Treasury Stock and Repurchase Program (Detail Textuals) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Jan. 31, 2015	Jan. 31, 2014	Sep. 19, 2012	Jan. 31, 2011
Equity, Class of Treasury Stock [Line Items]
Number of treasury shares	2,008us-gaap_TreasuryStockSharesAcquired	3,053us-gaap_TreasuryStockSharesAcquired
Total average cost	$ 29,000	$ 42,000	$ 71,000	$ 509,000
September 2012 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount of common stock					3,000,000
Number of treasury shares					78,452
Total average cost					732,000
January 2011 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Number of treasury shares						18,400
Total average cost						354,000
Former Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Number of treasury shares						85,219
Total average cost						$ 1,036,000