XML 17 R76.htm IDEA: XBRL DOCUMENT v2.4.0.8

Note 18 - Fair Value Measurements (Details) (USD $)	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Disclosure Text Block [Abstract]
Fair Value Assets, Transfers Level 1, Level 2, Level 3	$ 0	$ 0
Fair Value Inputs, Capitalization Rate	25.00%

X

- Definition

Transfers between Level1,Level2 or Level3

+ References

No definition available.

+ Details

Name:	ntic_FairValueAssetsTransfersLevel1Level2Level3
Namespace Prefix:	ntic_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	ntic_FairValueInputsCapitalizationRate
Namespace Prefix:	ntic_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DisclosureTextBlockAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration