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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:        
Net income (loss) including noncontrolling interests $ 5,325 $ (36,569) $ 6,704 $ (38,577)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities-        
Amortization of identifiable intangible assets 2,411 1,722 6,557 5,080
Depreciation expense 2,921 2,974 8,924 9,148
Goodwill impairment   55,134   55,134
Bad debt expense (18) (202) 2,468 509
Deferred tax expense (benefit) 641 (4,939) (204) (6,255)
Amortization of debt financing costs 57 56 172 168
Gain on sale of assets (99) (58) (554) (162)
Changes in the fair value of contingent earn-out obligations 38 (5,077) 105 (5,566)
Stock-based compensation expense 462 340 2,106 2,672
(Increase) decrease in-        
Receivables, net 16,019 (3,226) (3,887) (25,781)
Inventories 557 320 925 (199)
Prepaid expenses and other current assets 158 (4,172) 737 (1,969)
Costs and estimated earnings in excess of billings 558 (2,698) (2,681) (2,473)
Other noncurrent assets (593) 3,049 (2,535) 726
Increase (decrease) in-        
Accounts payable and accrued liabilities (9,178) (5,622) (14,878) (13,468)
Billings in excess of costs and estimated earnings (2,888) 660 (1,240) (1,204)
Other long-term liabilities 84 (214) 713 252
Net cash provided by (used in) operating activities 16,455 1,478 3,432 (21,965)
CASH FLOWS FROM INVESTING ACTIVITIES:        
Purchases of property and equipment (2,817) (2,548) (9,405) (6,452)
Proceeds from sales of property and equipment 205 230 967 611
Proceeds from businesses sold 43 39 121 117
Sale of marketable securities       2,000
Cash paid for acquisitions, earn-outs and intangible assets, net of cash acquired (428) (288) (12,656) (2,609)
Net cash used in investing activities (2,997) (2,567) (20,973) (6,333)
CASH FLOWS FROM FINANCING ACTIVITIES:        
Net borrowings (payments) on revolving line of credit (4,000)   14,000  
Payments on other long-term debt (300) (300) (4,400) (1,589)
Debt financing costs   (550)   (550)
Payments of dividends to shareholders (1,859) (1,864) (5,641) (5,667)
Share repurchase program (512) (2,609) (1,424) (6,321)
Shares received in lieu of tax withholding 8   (535) (654)
Excess tax benefit of stock-based compensation 25 2 (101) 206
Proceeds from exercise of options 34 1 70 219
Net cash provided by (used in) financing activities (6,604) (5,320) 1,969 (14,356)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 6,854 (6,409) (15,572) (42,654)
CASH AND CASH EQUIVALENTS, beginning of period 28,811 50,101 51,237 86,346
CASH AND CASH EQUIVALENTS, end of period $ 35,665 $ 43,692 $ 35,665 $ 43,692