CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 8,748	$ 4,495	$ 14,919	$ 6,746
Fair value of interest rate swap agreements, net of tax expense of $1 and $8, $2 and $8	2	23	6	21
Foreign currency translation adjustments	(38,898)	(2)	(53,021)	5,789
Defined benefit pension plans, net of tax of $20 and $17, $40 and $34	35	30	70	59
Other Comprehensive Income (Loss), Net of Tax	(38,861)	51	(52,945)	5,869
Total comprehensive income (loss)	(30,113)	4,546	(38,026)	12,615
Less: Net income attributable to the non-controlling interest	11	6	15	47
Total comprehensive income (loss) attributable to RSTI	$ (30,124)	$ 4,540	$ (38,041)	$ 12,568