Parent Financial Statements - Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income (loss)	$ (577)	$ 600	$ (5,188)	$ 309
Adjustments to reconcile net income (loss) to operating activities cash flows:
Depreciation			8,504	8,287
Gain on disposal of fixed assets			(15)
Amortization of deferred revenue and rent			(21)	(21)
Change in working capital components:
Prepaid expenses			(61)	(191)
Accrued expenses			(297)	(703)
Net cash provided by (used in) operating activities			(1,429)	7,590
Cash flows from investing activities:
Proceeds from sale of assets			24
Change in restricted cash			3,079	1,204
Net cash provided by (used in) investing activities			2,302	(1,122)
Cash flows from financing activities:
Net (decrease) in cash and cash equivalents			(2,196)	(3,670)
Beginning cash and cash equivalents			16,566	21,982
Ending cash and cash equivalents	14,370	18,312	14,370	18,312
Parent Company [Member]
Cash flows from operating activities:
Net income (loss)	(577)	600	(5,188)	309
Adjustments to reconcile net income (loss) to operating activities cash flows:
Depreciation			83	99
Equity in earnings of consolidated subsidiaries	420	(707)	4,773	(740)
Gain on disposal of fixed assets			7
Amortization of deferred revenue and rent			(21)	(21)
Change in working capital components:
Other receivable			6	(11)
Prepaid expenses				(4)
Accrued expenses			(192)	(59)
Net cash provided by (used in) operating activities			(532)	(427)
Cash flows from investing activities:
Proceeds from sale of assets			25
Change in restricted cash			(33)
Net cash provided by (used in) investing activities			(8)
Cash flows from financing activities:
Distribution to subsidiary			(3,000)
Distribution from subsidiary			108
Net cash (used in) financing activities			(2,892)
Net (decrease) in cash and cash equivalents			(3,432)	(427)
Beginning cash and cash equivalents			8,158	8,988
Ending cash and cash equivalents	$ 4,726	$ 8,561	$ 4,726	$ 8,561