ACCRUED EXPENSES, INCOME TAXES PAYABLE AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accrued expenses, income taxes payable and other current liabilities [Abstract]
Accrued compensation	$ 21,997	$ 16,980
Goods and services received, not yet invoiced	1,301	3,167
Deferred revenue and customer advances	720	1,223
Warranty accrual	223	246
Income taxes payable	2,493	5,448
Taxes, other than income taxes	1,201	1,182
Other	5,243	3,148
Total	$ 33,178	$ 31,394