Guarantor and Non-guarantor Financial Statements, Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (588)	$ (3,573)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	8,557	8,253
Amortization - deferred financing costs and debt discount	620	620
Amortization - other intangible assets	2,039	2,019
(Gain) loss on disposal of assets	(1)	(7)
Deferred income taxes	30	182
Non-cash stock-based compensation	663	499
Equity in earnings of subsidiaries and affiliates	0	0
Change in other operating items	(21,810)	(23,510)
Net cash used in operating activities	(10,490)	(15,517)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(4,071)	(6,709)
Proceeds from notes receivable	0	0
Payments on notes receivable	0	0
Other	0	1,235
Net cash used in investing activities	(4,071)	(5,474)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of notes payable	(8,000)	0
Proceeds from notes payable	11,000	10,000
Other	(642)	(795)
Net cash provided by financing activities	2,358	9,205
Net decrease in cash and cash equivalents	(12,203)	(11,786)
Cash and cash equivalents, beginning of period	29,773	33,426
Cash and cash equivalents, end of period	17,570	21,640
Eliminations [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(7,914)	(6,112)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	0	0
Amortization - deferred financing costs and debt discount	0	0
Amortization - other intangible assets	0	0
(Gain) loss on disposal of assets	0	0
Deferred income taxes	0	0
Non-cash stock-based compensation	0	0
Equity in earnings of subsidiaries and affiliates	7,613	5,673
Change in other operating items	301	439
Net cash used in operating activities	0	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	0	0
Proceeds from notes receivable	34,417	58,112
Payments on notes receivable	(58,880)	(31,168)
Other	0	0
Net cash used in investing activities	(24,463)	26,944
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of notes payable	58,880	31,168
Proceeds from notes payable	(34,417)	(58,112)
Other	0	0
Net cash provided by financing activities	24,463	(26,944)
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Parent [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(588)	(3,573)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	2,863	2,736
Amortization - deferred financing costs and debt discount	620	620
Amortization - other intangible assets	1,997	1,977
(Gain) loss on disposal of assets	17	(93)
Deferred income taxes	30	182
Non-cash stock-based compensation	663	499
Equity in earnings of subsidiaries and affiliates	(7,613)	(5,673)
Change in other operating items	(11,688)	(8,538)
Net cash used in operating activities	(13,699)	(11,863)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(2,388)	(3,651)
Proceeds from notes receivable	(24,726)	(29,370)
Payments on notes receivable	37,197	11,607
Other	3,164	0
Net cash used in investing activities	13,247	(21,414)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of notes payable	(29,683)	(19,561)
Proceeds from notes payable	20,691	38,742
Other	0	0
Net cash provided by financing activities	(8,992)	19,181
Net decrease in cash and cash equivalents	(9,444)	(14,096)
Cash and cash equivalents, beginning of period	22,710	31,018
Cash and cash equivalents, end of period	13,266	16,922
Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	6,775	4,177
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	4,681	4,456
Amortization - deferred financing costs and debt discount	0	0
Amortization - other intangible assets	42	42
(Gain) loss on disposal of assets	(18)	57
Deferred income taxes	0	0
Non-cash stock-based compensation	0	0
Equity in earnings of subsidiaries and affiliates	0	0
Change in other operating items	(8,972)	(14,798)
Net cash used in operating activities	2,508	(6,066)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(1,387)	(2,956)
Proceeds from notes receivable	(9,691)	(28,742)
Payments on notes receivable	21,683	19,561
Other	0	1,235
Net cash used in investing activities	10,605	(10,902)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of notes payable	(37,197)	(11,607)
Proceeds from notes payable	24,726	29,370
Other	(642)	(795)
Net cash provided by financing activities	(13,113)	16,968
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Non-guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	1,139	1,935
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	1,013	1,061
Amortization - deferred financing costs and debt discount	0	0
Amortization - other intangible assets	0	0
(Gain) loss on disposal of assets	0	29
Deferred income taxes	0	0
Non-cash stock-based compensation	0	0
Equity in earnings of subsidiaries and affiliates	0	0
Change in other operating items	(1,451)	(613)
Net cash used in operating activities	701	2,412
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(296)	(102)
Proceeds from notes receivable	0	0
Payments on notes receivable	0	0
Other	(3,164)	0
Net cash used in investing activities	(3,460)	(102)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of notes payable	0	0
Proceeds from notes payable	0	0
Other	0	0
Net cash provided by financing activities	0	0
Net decrease in cash and cash equivalents	(2,759)	2,310
Cash and cash equivalents, beginning of period	7,063	2,408
Cash and cash equivalents, end of period	$ 4,304	$ 4,718