Condensed Consolidating Financial Statements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 2,066	$ (352)	$ (1,329)	$ (4,784)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	4,076	4,425	8,423	9,157
Deferred income taxes			2,405	1,617
Amortization of debt issue costs			1,137	1,086
Amortization of syndication contracts			381	1,143
Payments on syndication contracts			(934)	(955)
Non-cash stock-based compensation	700	500	998	864
Other income (loss)				(687)
Gain (loss) on debt extinguishment	1,230		1,230
Changes in assets and liabilities, net of effect of acquisitions and dispositions:
(Increase) decrease in restricted cash				809
(Increase) decrease in accounts receivable			(3,771)	1,605
(Increase) decrease in amounts due from related party
(Increase) decrease in prepaid expenses and other assets			(177)	47
Increase (decrease) in accounts payable, accrued expenses and other liabilities			(1,998)	(783)
Net cash provided by (used in) operating activities			6,365	9,119
Cash flows from investing activities:
Investment in subsidiaries
Purchase of a business				(551)
Purchases of property and equipment and intangibles			(3,647)	(4,702)
Net cash provided by (used in) investing activities			(3,647)	(5,253)
Cash flows from financing activities:
Proceeds from issuance of common stock				42
Payments on long-term debt			(20,600)	(1,000)
Payments of deferred debt and offering costs			(80)	(29)
Net cash provided by (used in) financing activities			(20,680)	(987)
Net increase (decrease) in cash and cash equivalents			(17,962)	2,879
Cash and cash equivalents:
Beginning			58,719	72,390
Ending	40,757	75,269	40,757	75,269
Parent [Member]
Cash flows from operating activities:
Net income (loss)	2,066	(352)	(1,329)	(4,784)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,898	4,221	8,059	8,748
Deferred income taxes			580	(210)
Amortization of debt issue costs			1,137	1,086
Amortization of syndication contracts			381	1,143
Payments on syndication contracts			(934)	(955)
Non-cash stock-based compensation			998	864
Other income (loss)			0	(687)
Gain (loss) on debt extinguishment	1,230		1,230
Changes in assets and liabilities, net of effect of acquisitions and dispositions:
(Increase) decrease in restricted cash				809
(Increase) decrease in accounts receivable			(3,684)	1,778
(Increase) decrease in amounts due from related party			(15)	406
(Increase) decrease in prepaid expenses and other assets			(223)	73
Increase (decrease) in accounts payable, accrued expenses and other liabilities			(1,698)	(739)
Net cash provided by (used in) operating activities			4,502	7,532
Cash flows from investing activities:
Investment in subsidiaries			2,035	1,478
Purchase of a business				(551)
Purchases of property and equipment and intangibles			(3,641)	(4,511)
Net cash provided by (used in) investing activities			(1,606)	(3,584)
Cash flows from financing activities:
Proceeds from issuance of common stock				42
Payments on long-term debt			(20,600)	(1,000)
Payments of deferred debt and offering costs			(80)	(29)
Net cash provided by (used in) financing activities			(20,680)	(987)
Net increase (decrease) in cash and cash equivalents			(17,784)	2,961
Cash and cash equivalents:
Beginning			58,276	72,140
Ending	40,492	75,101	40,492	75,101
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	(1,010)	(851)	(2,020)	(1,695)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization
Deferred income taxes			2,020	1,695
Amortization of debt issue costs
Amortization of syndication contracts
Payments on syndication contracts
Non-cash stock-based compensation
Other income (loss)			0
Gain (loss) on debt extinguishment
Changes in assets and liabilities, net of effect of acquisitions and dispositions:
(Increase) decrease in accounts receivable
(Increase) decrease in amounts due from related party
(Increase) decrease in prepaid expenses and other assets
Increase (decrease) in accounts payable, accrued expenses and other liabilities
Net cash provided by (used in) operating activities
Cash flows from investing activities:
Investment in subsidiaries
Purchases of property and equipment and intangibles
Net cash provided by (used in) investing activities
Cash flows from financing activities:
Payments on long-term debt
Payments of deferred debt and offering costs
Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents:
Beginning
Ending
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	(80)	149	(15)	217
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	178	204	364	409
Deferred income taxes			(195)	132
Amortization of debt issue costs
Amortization of syndication contracts
Payments on syndication contracts
Non-cash stock-based compensation
Other income (loss)			0
Gain (loss) on debt extinguishment
Changes in assets and liabilities, net of effect of acquisitions and dispositions:
(Increase) decrease in accounts receivable			(87)	(173)
(Increase) decrease in amounts due from related party			15	(406)
(Increase) decrease in prepaid expenses and other assets			46	(26)
Increase (decrease) in accounts payable, accrued expenses and other liabilities			(300)	(44)
Net cash provided by (used in) operating activities			(172)	109
Cash flows from investing activities:
Investment in subsidiaries
Purchases of property and equipment and intangibles			(6)	(191)
Net cash provided by (used in) investing activities			(6)	(191)
Cash flows from financing activities:
Payments on long-term debt
Payments of deferred debt and offering costs
Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents			(178)	(82)
Cash and cash equivalents:
Beginning			443	443
Ending	265	168	265	168
Eliminations [Member]
Cash flows from operating activities:
Net income (loss)	1,090	702	2,035	1,478
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization
Deferred income taxes
Amortization of debt issue costs
Amortization of syndication contracts
Payments on syndication contracts
Non-cash stock-based compensation
Other income (loss)			0
Gain (loss) on debt extinguishment
Changes in assets and liabilities, net of effect of acquisitions and dispositions:
(Increase) decrease in accounts receivable
(Increase) decrease in amounts due from related party
(Increase) decrease in prepaid expenses and other assets
Increase (decrease) in accounts payable, accrued expenses and other liabilities
Net cash provided by (used in) operating activities			2,035	1,478
Cash flows from investing activities:
Investment in subsidiaries			(2,035)	(1,478)
Purchases of property and equipment and intangibles
Net cash provided by (used in) investing activities			(2,035)	(1,478)
Cash flows from financing activities:
Payments on long-term debt
Payments of deferred debt and offering costs
Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents			0
Cash and cash equivalents:
Beginning
Ending