Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

Segment Information [Abstract]

Summary of net income (loss)

	GLC		GDT		Interpretation		Corporate and Other			Total
Three Months Ended June 30, 2012
External revenue	$	83,022,000	$	30,046,000	$	6,121,000	$	—		$	119,189,000
Cost of revenue (exclusive of depreciation and amortization)		54,663,000		20,800,000		5,110,000		—			80,573,000
Depreciation and amortization		1,119,000		412,000		7,000		695,000			2,233,000
Other operating expenses		18,602,000		3,718,000		469,000		—			22,789,000
Segment contribution		8,638,000		5,116,000		535,000		(695,000	)		13,594,000
Interest expense and other unallocated items		—		—		—		(14,310,000	)		(14,310,000	)
Income (loss) before income taxes		8,638,000		5,116,000		535,000		(15,005,000	)		(716,000	)
Three Months Ended June 30, 2011
External revenue	$	80,042,000	$	27,070,000	$	6,133,000	$	—		$	113,245,000
Cost of revenue (exclusive of depreciation and amortization)		54,332,000		19,113,000		5,363,000		—			78,808,000
Depreciation and amortization		1,014,000		256,000		26,000		723,000			2,019,000
Other operating expenses		18,980,000		3,707,000		397,000		—			23,084,000
Segment contribution		5,716,000		3,994,000		347,000		(723,000	)		9,334,000
Interest expense and other unallocated items		—		—		—		(7,052,000	)		(7,052,000	)
Income (loss) before income taxes		5,716,000		3,994,000		347,000		(7,775,000	)		2,282,000
Six Months Ended June 30, 2012
External revenue	$	160,622,000	$	58,646,000	$	12,017,000	$	—		$	231,285,000
Cost of revenue (exclusive of depreciation and amortization)		107,774,000		40,998,000		9,974,000		—			158,746,000
Depreciation and amortization		2,216,000		814,000		13,000		1,315,000			4,358,000
Other operating expenses		37,034,000		7,539,000		963,000		—			45,536,000
Segment contribution		13,598,000		9,295,000		1,067,000		(1,315,000	)		22,645,000
Interest expense and other unallocated items		—		—		—		(21,058,000	)		(21,058,000	)
Income (loss) before income taxes		13,598,000		9,295,000		1,067,000		(22,373,000	)		1,587,000
Six Months Ended June 30, 2011
External revenue	$	149,513,000	$	51,416,000	$	11,968,000	$	—		$	212,897,000
Cost of revenue (exclusive of depreciation and amortization)		103,899,000		36,144,000		10,501,000		—			150,544,000
Depreciation and amortization		1,946,000		440,000		53,000		1,453,000			3,892,000
Other operating expenses		37,436,000		7,063,000		1,065,000		—			45,564,000
Segment contribution		6,232,000		7,769,000		349,000		(1,453,000	)		12,897,000
Interest expense and other unallocated items		—		—		—		(15,590,000	)		(15,590,000	)
Income (loss) before income taxes		6,232,000		7,769,000		349,000		(17,043,000	)		(2,693,000	)