DISCONTINUED OPERATIONS (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Jun. 30, 2010 Rig	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Operating results from discontinued operations
Income (loss) before income taxes		$ 14,701	$ 7,355	$ (487)
Income tax benefit		(485)	(81)	(5)
Income (loss) from discontinued operations		15,186	7,436	(482)
Assets and liabilities from discontinued operations
Other current assets		3,705	7,619
Total current liabilities		3,210	5,129
Total noncurrent liabilities		495	2,490
Venezuelan subsidiary
Discontinued Operations, Additional Disclosures
Number of rigs owned subject to forceful acquisition	11
Operating results from discontinued operations
Income (loss) before income taxes		14,701	7,355	(487)
Income tax benefit		(485)	(81)	(5)
Income (loss) from discontinued operations		15,186	7,436	(482)
Assets and liabilities from discontinued operations
Other current assets		3,705	7,619
Total assets		3,705	7,619
Total current liabilities		3,210	5,129
Total noncurrent liabilities		495	2,490
Total liabilities		$ 3,705	$ 7,619