Guarantor Subsidiaries (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements of Cash Flows [Abstract]
Net Provided by Operating Activities	$ 13,258	$ 10,771
Cash Flows from Investing Activities:
Capital expenditures	(4,187)	(9,200)
Other investing activities	120
Discontinued operations, net	(689)	(995)
Net Cash Used by Investing Activities	(4,756)	(10,195)
Cash Flows from Financing Activities:
Payments of long-term debt	(13)	(11)
Debt issuance costs		(878)
Issuance of common stock	53	81
Discontinued operations, net	(40)	(41)
Net Cash Used by Financing Activities		(849)
Effect of Changes in Currency Exchange Rates	(8)	61
Net Change in Cash and Cash Equivalents	8,494	(212)
Cash and Cash Equivalents, Beginning of Period	30,703	23,985
Cash and Cash Equivalents, End of Period	39,197	23,773
Parent [Member]
Cash Flows from Financing Activities:
Debt issuance costs		(878)
Issuance of common stock	53	81
Intercompany advances, net	(53)	797
Guarantor Subsidiaries [Member]
Condensed Consolidated Statements of Cash Flows [Abstract]
Net Provided by Operating Activities	14,259	11,154
Cash Flows from Investing Activities:
Capital expenditures	(4,187)	(9,200)
Other investing activities	120
Discontinued operations, net	(547)	(517)
Net Cash Used by Investing Activities	(4,614)	(9,717)
Cash Flows from Financing Activities:
Payments of long-term debt	(13)	(11)
Intercompany advances, net	53	(797)
Discontinued operations, net	(1,193)	(286)
Net Cash Used by Financing Activities	(1,153)	(1,094)
Net Change in Cash and Cash Equivalents	8,492	343
Cash and Cash Equivalents, Beginning of Period	30,126	22,991
Cash and Cash Equivalents, End of Period	38,618	23,334
Non-Guarantor Subsidiaries [Member]
Condensed Consolidated Statements of Cash Flows [Abstract]
Net Provided by Operating Activities	(1,001)	(383)
Cash Flows from Investing Activities:
Discontinued operations, net	(142)	(478)
Net Cash Used by Investing Activities	(142)	(478)
Cash Flows from Financing Activities:
Discontinued operations, net	1,153	245
Net Cash Used by Financing Activities	1,153	245
Effect of Changes in Currency Exchange Rates	(8)	61
Net Change in Cash and Cash Equivalents	2	(555)
Cash and Cash Equivalents, Beginning of Period	577	994
Cash and Cash Equivalents, End of Period	579	439
Eliminations [Member]
Condensed Consolidated Statements of Cash Flows [Abstract]
Net Provided by Operating Activities
Cash Flows from Investing Activities:
Capital expenditures
Other investing activities
Discontinued operations, net
Net Cash Used by Investing Activities
Cash Flows from Financing Activities:
Payments of long-term debt
Debt issuance costs
Issuance of common stock
Intercompany advances, net
Discontinued operations, net
Net Cash Used by Financing Activities
Effect of Changes in Currency Exchange Rates
Net Change in Cash and Cash Equivalents
Cash and Cash Equivalents, Beginning of Period
Cash and Cash Equivalents, End of Period