QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - Schedule of quarterly financial information - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 502,158	$ 511,694	$ 500,020	$ 502,160	$ 525,627	$ 505,039	$ 507,687	$ 453,458	$ 2,016,032	$ 1,991,811	$ 1,871,327
Gross Profit	119,925	123,489	114,375	117,989	125,602	118,307	109,987	105,503	475,778	459,399	417,585
Net Income (loss)	$ 10,803	$ 10,893	$ 5,122	$ 7,471	$ 7,948	$ 14,464	$ (25,825)	$ 3,236	$ 34,289	$ (177)	$ 3,767
Per Share - Basic (in Dollars per share)	$ 0.25	$ 0.25	$ 0.11	$ 0.16	$ 0.16	$ 0.30	$ (0.53)	$ 0.06	$ 0.77	$ 0.00	$ 0.07
Per Share - Diluted (in Dollars per share)	$ 0.24	$ 0.23	$ 0.11	$ 0.04	$ 0.16	$ 0.29	$ (0.53)	$ 0.06	$ 0.73	$ 0.00	$ 0.07