Condensed Consolidating Financial Statements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (957)	$ (3,395)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,955	4,347
Deferred income taxes	1,842	1,106
Amortization of debt issue costs	455	563
Amortization of syndication contracts	151	193
Payments on syndication contracts	(325)	(467)
Non-cash stock-based compensation	872	261
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	1,916	3,269
(Increase) decrease in prepaid expenses and other assets	(828)	(644)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(8,692)	(11,539)
Net cash provided by (used in) operating activities	(1,611)	(6,306)
Cash flows from investing activities:
Purchases of property and equipment and intangibles	(2,555)	(1,164)
Net cash provided by (used in) investing activities	(2,555)	(1,164)
Cash flows from financing activities:
Payments of deferred debt and offering costs		(80)
Proceeds from issuance of common stock	351
Net cash provided by (used in) financing activities	351	(80)
Net increase (decrease) in cash and cash equivalents	(3,815)	(7,550)
Cash and cash equivalents:
Beginning	36,130	58,719
Ending	32,315	51,169
Parent [Member]
Cash flows from operating activities:
Net income (loss)	(957)	(3,395)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,813	4,161
Deferred income taxes	(40)	96
Amortization of debt issue costs	455	563
Amortization of syndication contracts	151	193
Payments on syndication contracts	(325)	(467)
Non-cash stock-based compensation	872	261
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	2,037	3,466
(Increase) decrease in amounts due from related party	(112)	(11)
(Increase) decrease in prepaid expenses and other assets	(655)	(682)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(8,697)	(11,504)
Net cash provided by (used in) operating activities	(3,458)	(7,319)
Cash flows from investing activities:
Investment in subsidiaries	1,704	945
Purchases of property and equipment and intangibles	(2,360)	(1,164)
Net cash provided by (used in) investing activities	(656)	(219)
Cash flows from financing activities:
Payments of deferred debt and offering costs		(80)
Proceeds from issuance of common stock	351
Net cash provided by (used in) financing activities	351	(80)
Net increase (decrease) in cash and cash equivalents	(3,763)	(7,618)
Cash and cash equivalents:
Beginning	35,631	58,276
Ending	31,868	50,658
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	(1,787)	(1,010)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred income taxes	1,787	1,010
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net income (loss)	83	65
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	142	186
Deferred income taxes	95
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(121)	(197)
(Increase) decrease in amounts due from related party	112	11
(Increase) decrease in prepaid expenses and other assets	(173)	38
Increase (decrease) in accounts payable, accrued expenses and other liabilities	5	(35)
Net cash provided by (used in) operating activities	143	68
Cash flows from investing activities:
Purchases of property and equipment and intangibles	(195)
Net cash provided by (used in) investing activities	(195)
Cash flows from financing activities:
Net increase (decrease) in cash and cash equivalents	(52)	68
Cash and cash equivalents:
Beginning	499	443
Ending	447	511
Eliminations [Member]
Cash flows from operating activities:
Net income (loss)	1,704	945
Changes in assets and liabilities:
Net cash provided by (used in) operating activities	1,704	945
Cash flows from investing activities:
Investment in subsidiaries	(1,704)	(945)
Net cash provided by (used in) investing activities	$ (1,704)	$ (945)