Discontinued Operations (Summary of Assets and Liabilities) (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Assets
Current assets	$ 21,763,000	$ 18,591,000
Globetec [Member]
Assets
Current assets	21,800,000	18,600,000
Property and equipment, net	2,000,000	2,000,000
Other long-term assets	5,500,000	5,700,000
Assets of discontinued operations	29,300,000	26,300,000
Liabilities
Accounts payable and accrued expenses	7,200,000	7,000,000
Other current liabilities	2,700,000	3,700,000
Liabilities of discontinued operations	$ 9,900,000	$ 10,700,000