Discontinued Operations (Narrative) (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		1 Months Ended		9 Months Ended			3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Globetec [Member]	Sep. 30, 2012 Globetec [Member]	Sep. 30, 2013 Globetec [Member]	Sep. 30, 2012 Globetec [Member]	Sep. 30, 2013 Globetec [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 30, 2013 Globetec [Member] Variable Interest Entity, Not Primary Beneficiary [Member] Surety Bond [Member]	Sep. 30, 2013 Globetec [Member] Variable Interest Entity, Not Primary Beneficiary [Member] Prepaid Expenses and Other Current Assets [Member]	Sep. 30, 2013 Globetec [Member] Variable Interest Entity, Not Primary Beneficiary [Member] Prepaid Expenses and Other Current Assets [Member] Maximum [Member]	Sep. 30, 2013 Globetec [Member] Variable Interest Entity, Not Primary Beneficiary [Member] Other Noncurrent Assets [Member]	Sep. 30, 2012 DirectStar [Member]	Jun. 30, 2012 DirectStar [Member]	Sep. 30, 2013 DirectStar [Member]	Sep. 30, 2012 DirectStar [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations description							In September 2012, the Company's board of directors approved a plan of sale for its Globetec business. Accordingly, Globetec's projects and assets are reflected as assets and liabilities of discontinued operations in the condensed unaudited consolidated balance sheets for all periods presented, and Globetec's results of operations are presented as discontinued operations in the condensed unaudited consolidated statements of operations for all periods presented. Effective August 31, 2013, the Company sold all of its membership interests in Globetec Construction, LLC ("Globetec") for nominal consideration amount and retained certain assets, including two pre-closing, intercompany loans of $2.0 million and $5.6 million.									In May 2012, Red Ventures exercised its option to acquire from the Company the equity interests in DirectStar, which provides marketing and sales services on behalf of DIRECTV®. The Company consummated the sale of DirectStar to Red Ventures in June 2012 for a net sale price of $98.9 million in cash. DirectStar is presented as a discontinued operation in the Company’s condensed unaudited consolidated financial statements for all periods presented.
Disposal date							Aug. 31, 2013									Jun. 30, 2012
Variable interest entity, nonconsolidated, carrying amount, loan to entity											$ 2,000,000		$ 5,600,000
Loan, variable interest entity, nonconsolidated, interest rate											0.25%
Loan, variable interest entity, unconsolidated, interest rate, minimum													5.00%
Loan, variable interest entity, maturity date												Oct. 03, 2014	Oct. 03, 2014
Loan, variable interest entity, unconsolidated, interest rate, maximum													10.00%
Discontinued operations, status at latest balance sheet date							The sale agreement provides that the Company would retain certain contingent assets and liabilities of the Globetec business, which are reported in discontinued operations
Variable interest entity, ownership percentage									0.00%
Outstanding bonds, amount										41,800,000
Net sale price															98,900,000
Income from discontinued operations, net of tax	$ (3,735,000)	$ (9,281,000)	$ (5,165,000)	$ (7,881,000)	$ (3,700,000)	$ (9,300,000)	$ (5,200,000)	$ (11,600,000)						$ 0			$ 3,700,000